[openssl/openssl] c332ad: Reject oversized inputs in ASN1_mbstring_ncopy()

"'openssl-machine' via openssl-commits" <[email protected]>
Newsgroups gmane.comp.encryption.openssl.cvs
Message-ID <openssl/openssl/push/refs/heads/openssl-3.6/[email protected]> 
  Branch: refs/heads/openssl-3.6
  Home:   https://github.com/openssl/openssl
  Commit: c332adaced43bcbb85f97410597e951c11ec3083
      https://github.com/openssl/openssl/commit/c332adaced43bcbb85f97410597e951c11ec3083
  Author: Viktor Dukhovni <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/asn1/a_mbstr.c

  Log Message:
  -----------
  Reject oversized inputs in ASN1_mbstring_ncopy()

In ASN1_mbstring_ncopy() the destination size for BMPSTRING and
UNIVERSALSTRING output was computed by a signed left shift on an
int:

    outlen = nchar << 1;        /* MBSTRING_BMP  */
    outlen = nchar << 2;        /* MBSTRING_UNIV */

For nchar large enough the result is not representable in int.  In
the worst case (nchar == 0x40000000) nchar << 2 wraps to zero,
OPENSSL_malloc(1) is called, and traverse_string() then writes
4*nchar bytes into the one-byte allocation: a heap buffer
overflow.  The MBSTRING_UTF8 path computes outlen by summing
per-character byte counts in out_utf8(), and that sum can overflow
the same int under similarly large inputs.

Neither path is reachable from code that processes X.509
certificates through the DIRSTRING_TYPE mask used by
ASN1_STRING_set_by_NID(): UNIVERSALSTRING is absent from that
mask, and the UTF-8 sum requires inputs on the order of half a
gigabyte.  Reaching them needs an application that calls
ASN1_mbstring_copy()/ASN1_mbstring_ncopy() directly, or registers
a custom NID via ASN1_STRING_TABLE_add(), with an oversized
attacker-controlled input.

Add range checks before each shift and in out_utf8(), raising
ASN1_R_STRING_TOO_LONG at the point of detection.  Move the
existing ASN1_R_INVALID_UTF8STRING raise into out_utf8() too so
the two failure modes report distinct codes; the MBSTRING_UTF8
caller is left with cleanup only and now frees dest on error,
matching the BMP/UNIV branches.

Fixes CVE-2026-7383

Reviewed-by: Nikola Pajkovsky <[email protected]>
Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Daniel Kubec <[email protected]>
MergeDate: Mon Jun  8 13:59:47 2026
(cherry picked from commit d32350ae8ef7426718f5aa9e383d4b51398ee255)


  Commit: 77bf00ab13f6ff5e516535432f0328ed70ec0c26
      https://github.com/openssl/openssl/commit/77bf00ab13f6ff5e516535432f0328ed70ec0c26
  Author: Nikola Pajkovsky <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/cms/cms_pwri.c

  Log Message:
  -----------
  cms: kek_unwrap_key: Fix out-of-bounds read in check-byte validation

the check-byte test in kek_unwrap_key() reads tmp[1] through tmp[6]
unconditionally, so the decrypted buffer must hold at least seven
octets. The pre-decryption size check enforces inlen >= 2 * blocklen,
which yields the required seven octets only when blocklen >= 4. For
a KEK cipher with a smaller block size, inlen can be as small as
2 * blocklen and the check-byte read overruns the inlen-sized tmp
allocation.

Reject blocklen < 4 in the early sanity check. All block ciphers
appropriate for CMS PasswordRecipientInfo key wrapping have a block
size of at least 8 octets (DES/3DES = 8, AES = 16), so this only
forbids ciphers that would not be valid KEK choices anyway, and the
existing inlen >= 2 * blocklen check then guarantees the seven-octet
lower bound the check-byte test relies on.

Fixes CVE-2026-9076

Signed-off-by: Nikola Pajkovsky <[email protected]>

Reviewed-by: Daniel Kubec <[email protected]>
Reviewed-by: Milan Broz <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:06:36 2026
(cherry picked from commit 1a653f2176434e6ec94f4b70e6796e911a3e607f)


  Commit: 5f54bfc91af413ec80279a928ac28c054b1bc8fe
      https://github.com/openssl/openssl/commit/5f54bfc91af413ec80279a928ac28c054b1bc8fe
  Author: Nikola Pajkovsky <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M test/cmsapitest.c
    M test/recipes/80-test_cmsapi.t
    A test/recipes/80-test_cmsapi_data/cms_pwri_kek_oob.der

  Log Message:
  -----------
  cms: kek_unwrap_key: test for fix out-of-bounds read in check-byte validation

added EnvelopedData blob with a PasswordRecipientInfo using
id-alg-PWRI-KEK and an AES-128-CFB key encryption cipher. CFB's 1-byte
effective block size let the inlen >= 2 * blocklen guard in
kek_unwrap_key() accept a wrapped key shorter than the seven octets
the check-byte test reads from tmp[1..6]; the encryptedKey OCTET
STRING here is only two bytes.

Signed-off-by: Nikola Pajkovsky <[email protected]>

Reviewed-by: Daniel Kubec <[email protected]>
Reviewed-by: Milan Broz <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:06:38 2026
(cherry picked from commit fd1e1078df9e68affcaaa88be75e343c1db3d1a4)


  Commit: d93853c42110d6319e3df07842b488cb9f7ac5ff
      https://github.com/openssl/openssl/commit/d93853c42110d6319e3df07842b488cb9f7ac5ff
  Author: Viktor Dukhovni <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/asn1/tasn_dec.c

  Log Message:
  -----------
  Avoid length truncation in ASN1_STRING_set

The ASN1_STRING_set() function takes an `int` length, make sure the
argument is not inadvertently truncated when it is called from
asn1_ex_c2i().

Fixes CVE-2026-34180

Reviewed-by: Nikola Pajkovsky <[email protected]>
Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:13:56 2026
(cherry picked from commit 5f525cace61a53311ee533374919356c700847d9)


  Commit: ec36f2417c4ddd8cabce4b4a60a3d7a7365f2d81
      https://github.com/openssl/openssl/commit/ec36f2417c4ddd8cabce4b4a60a3d7a7365f2d81
  Author: Alicja Kario <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/pkcs12/p12_mutl.c
    M test/recipes/80-test_pkcs12.t
    A test/recipes/80-test_pkcs12_data/pbmac1_256_256.bad-key-len.p12
    A test/recipes/80-test_pkcs12_data/pbmac1_256_256.good-shorter-key-len.p12

  Log Message:
  -----------
  pkcs12: verify that the pbmac1 key length is safe

Short mac keys (as short as 1 byte) can be used to probe the
system under attack to accept a PKCS#12 file created by an attacker
even if the attacker doesn't know the password used for MAC protection.

Fixes CVE-2026-34181

(also update the reference to the PBMAC1 PKCS#12 RFC)

Signed-off-by: Alicja Kario <[email protected]>

Reviewed-by: Dmitry Belyavskiy <[email protected]>
Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:20:38 2026


  Commit: 439ed7d2c0962ce964482727264668bf277c333f
      https://github.com/openssl/openssl/commit/439ed7d2c0962ce964482727264668bf277c333f
  Author: Neil Horman <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/cms/cms_enc.c

  Log Message:
  -----------
  Reject potentially forged encrypted CMS AuthEnvelopedData messages

1. Adjust ossl_cms_EncryptedContent_init_bio to not accept non-AEAD
ciphers.

If a forged CMS message with AuthEnvelopedData is received with
a non-AEAD cipher specified, we silently accept that and decrypt
the message, skipping any authentication, which violates RFC 5083.

We also add checks to ensure we fail if we try to encrypt
AuthEnvelopedData without using an AEAD cipher.

2. Ensure that tag lengths on cms AEAD data is the recommended size.

RFC 5084 recommends that mac tags be at least 12 bytes for AES-GCM
and 4 bytes for AES-CCM on AuthEnvelopedData. As this code is not
algorith-specific we add a check for a minimal size and just use the
lower limit which is sufficient to prevent this attack.

Without this check, its possible to set the tag length to 1 and within
256 guesses, forge a CMS message.

Fixes CVE-2026-34182

Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:27:02 2026
(cherry picked from commit b9258b3ed7304cc2f749f79a09d18602fd51a4a2)


  Commit: dfb97bcddf80c54c47a9ef77a1e7381c57bbc296
      https://github.com/openssl/openssl/commit/dfb97bcddf80c54c47a9ef77a1e7381c57bbc296
  Author: Neil Horman <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M test/cmsapitest.c

  Log Message:
  -----------
  Add tests for CVE-2026-34182

Test to ensure that for a given CMS message:

1) We do not allow the creation of a CMS message containing
   AuthEnvelopedData with a non-AEAD cipher.
2) We do not accept a message containing AuthEnvelopedData with a
   non-AEAD cipher specified in the AlgorithmIdentifier.
3) We do not allow tag lengths less that 4 bytes.

Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:27:03 2026
(cherry picked from commit d11787af723d8230f98a34d9ba5e43229982795a)


  Commit: 5b306efb0b3779dfdd0803b4afc9d08c91f11517
      https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517
  Author: Alexandr Nedvedicky <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M include/internal/quic_cfq.h
    M include/internal/quic_channel.h
    M include/internal/quic_fifd.h
    M ssl/quic/quic_cfq.c
    M ssl/quic/quic_channel.c
    M ssl/quic/quic_channel_local.h
    M ssl/quic/quic_fifd.c
    M ssl/quic/quic_rx_depack.c
    M ssl/quic/quic_txp.c

  Log Message:
  -----------
  QUIC stack must limit the number of PATH_CHALLENGE frames processed in RX

Currently local QUIC stack allocates PATH_RESPONSE frame for every
PATH_CHALLENGE frame it receives in single packet from its remote peer.
The memory with PATH_RESPONSE frame is released after local QUIC stack
receives an ACK which confirms reception of PATH_RESPONSE by remote peer.
This gives remote peer too much control over memory resources local
QUIC stack may consume.

Quoting RFC 9000 section 9.2.1:
	...an endpoint SHOULD NOT send multiple
	PATH_CHALLENGE frames in a single packet.

Limiting the number of PATCH_CHALLENGE frames to 1 per QUIC packet received
helps to reduce heap memory overhead required to process PATH_CHALLENGE
frame.

Currently QUIC ACKM (ACK-manager) keeps all frames in retransmission
buffer until ACK is received. It can be changed such frames which
don't need to be ACKed don't need to be kept in retrans buffer,
those can be released right after transmission.

Fixes CVE-2026-34183

Reviewed-by: Nikola Pajkovsky <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:38:28 2026
(cherry picked from commit fbaa83859c01ad64f497b757aaf51be7d05ed9eb)


  Commit: 391d6bc8888477410b347d4045583e81e6684a01
      https://github.com/openssl/openssl/commit/391d6bc8888477410b347d4045583e81e6684a01
  Author: Alexandr Nedvedicky <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M include/internal/quic_channel.h
    M ssl/quic/quic_channel.c
    M ssl/quic/quic_channel_local.h
    M ssl/quic/quic_rx_depack.c
    M test/radix/quic_tests.c

  Log Message:
  -----------
  Add test for path challenge flood mitigation

Client injects 16 path challenge frames. Those are received
by server. Only one challenge frame of 16 received triggers
path challenge response. Remaining challenge frames are
discrded/ignored.

Test introduces two counters to channel object:
  - path_challenge_rx which is bumped for every patch challenge
  frame received

  - path_response_tx which is bumped for every path response
  frame transmitted

Succesuful test verifies server receives 16 path challenge frames,
but sends just one path response frmae as response.

Reviewed-by: Nikola Pajkovsky <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:38:29 2026
(cherry picked from commit 955d15f2e515559f63590da1d106e3a38c6a502e)


  Commit: 131145d25659e8749a9ed1afb383484854cffb78
      https://github.com/openssl/openssl/commit/131145d25659e8749a9ed1afb383484854cffb78
  Author: Daniel Kubec <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/x509/x509_vfy.c

  Log Message:
  -----------
  Fix Double-free When Checking OCSP Stapled Response

If OCSP stapling is enabled and the TLS client connects to a malicious server,
a crafted OCSP stapled response can trigger a double free in the TLS client
when the stapled response is checked.

The OCSP stapling is not enabled by default. Reliable code execution
through a double-free is technically complex and highly environment-dependent
but the Denial of Service impact is straightforward to achieve, warranting
Moderate severity.

Fixes CVE-2026-35188

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:44:58 2026
(cherry picked from commit ac4b7adc4e8208b27a12b2e345b067ca49e3c451)


  Commit: a45a0aba8095682c88ff4fc4a784892b8c6f0677
      https://github.com/openssl/openssl/commit/a45a0aba8095682c88ff4fc4a784892b8c6f0677
  Author: Alexandr Nedvedicky <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M ssl/quic/quic_port.c

  Log Message:
  -----------
  Fix NULL dereference in QUIC address validation

QUIC server crashes when address validation (RFC 9000, Section 8.1)
is disabled and client sends initial packet with invalid token.

Issue reported and fix submitted by Sunwoo Lee (KENTECH),
Hyuk Lim (KENTECH) and Seunghyun Yoon (KENTECH)

Fixes CVE-2026-42764

Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 14:50:48 2026
(cherry picked from commit e74289062ca6ff778807aa79c03eae4cfc9635b7)


  Commit: eb345da18ce2216b2f3ade9c2bc23e068487fa97
      https://github.com/openssl/openssl/commit/eb345da18ce2216b2f3ade9c2bc23e068487fa97
  Author: Daniel Kubec <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/x509/x509_vfy.c

  Log Message:
  -----------
  Fix NULL Dereference in Certificate Verification with OCSP Checking

When performing OCSP response checking for certificates in the verification
chain, the code always tries to access the next certificate as the issuer.
There is a check for a self-signed certificate. However with the partial
chain verification enabled when the chain does not have a self-signed trusted
anchor, the issuer will be NULL for the last certificate in the chain. A NULL
pointer dereference then happens.

This issue affects only applications which enable both OCSP verification
of the certificate chain (X509_V_FLAG_OCSP_RESP_CHECK_ALL) and partial
chain verification (X509_V_FLAG_PARTIAL_CHAIN) in the certificate
verification. Both flags are disabled by default. For that reason, we have
assigned Low severity to the issue.

Fixes CVE-2026-42765

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 18:55:29 2026
(cherry picked from commit 1b5b3379bad0aaff7ed21096c28872dc19ad3cbc)


  Commit: da26f368732b83e40e9d356fe61c3d3aaab6d2e8
      https://github.com/openssl/openssl/commit/da26f368732b83e40e9d356fe61c3d3aaab6d2e8
  Author: Igor Ustinov <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/cms/cms_pwri.c

  Log Message:
  -----------
  Fix potential NULL dereference processing CMS PasswordRecipientInfo

Avoid NULL dereferencing when keyDerivationAlgorithm is absent
in CMS PasswordRecipientInfo.

Fixes CVE-2026-42766

Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 18:57:52 2026
(cherry picked from commit f019b72c589071a73acda9812775389a857884c9)


  Commit: a5b591ee8533245dcfb1d5a4e4c2b6801212fd8e
      https://github.com/openssl/openssl/commit/a5b591ee8533245dcfb1d5a4e4c2b6801212fd8e
  Author: Igor Ustinov <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    A test/cms-msg/make_missing_kdf_der.py
    A test/cms-msg/missing-kdf.der
    M test/recipes/80-test_cms.t

  Log Message:
  -----------
  Test for CVE-2026-42766

The script make_missing_kdf_der.py was developed by Mayank Jangid
and Kushal Khemka.

Co-Authored-by: Mayank Jangid <[email protected]>
Co-Authored-by: Kushal Khemka <[email protected]>

Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 18:57:53 2026
(cherry picked from commit 7020987c162fe81e12e10101dd32f57bdfc7ff5e)


  Commit: a2ca7b2d73e0ffc1eae183fe6e1741dac767cb4f
      https://github.com/openssl/openssl/commit/a2ca7b2d73e0ffc1eae183fe6e1741dac767cb4f
  Author: Dmitry Belyavskiy <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/cms/cms_env.c
    M crypto/pkcs7/pk7_doit.c
    M doc/man3/CMS_decrypt.pod
    M doc/man3/PKCS7_decrypt.pod

  Log Message:
  -----------
  Enforce implicit rejection for CMS/PKCS#7 decryption

Drop the disablement of the implicit rejection for RSA PKCS#1 v1.5
decryption.

Fixes CVE-2026-42768

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Milan Broz <[email protected]>
Reviewed-by: Alicja Kario <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 19:49:19 2026
(cherry picked from commit 33def545a0c173aec43891f24c3df4f7d2e4fd87)


  Commit: d35cd473a271bf3ce7bf3d32af53217fb83ae92c
      https://github.com/openssl/openssl/commit/d35cd473a271bf3ce7bf3d32af53217fb83ae92c
  Author: Bob Beck <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/cmp/cmp_genm.c

  Log Message:
  -----------
  Use the correct issuer when validating rootCAKeyUpdate

This correctly uses the existing root, and not the same certificate
as the root of the chain to validate.

While we are here, we also turn on self signed certificate signature
checking as this case is actually bringing in trust anchors as
self signed certs, and fix a possible NULL deref.

Fixes CVE-2026-42769

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 19:54:01 2026
(cherry picked from commit 8b6c5dacb6ade54f30778cf344600d4a9df1f032)


  Commit: 3ddbb7ab50bd93dfc59cbe08e269a67605aeebdb
      https://github.com/openssl/openssl/commit/3ddbb7ab50bd93dfc59cbe08e269a67605aeebdb
  Author: Norbert Pocs <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M providers/implementations/exchange/dh_exch.c.in

  Log Message:
  -----------
  Match the local q DHX parameter against the peer's q

As FFC/DH peer public key validation uses the peer's q value instead
of checking against the local q, we must also check that these
q values match when setting the peer's public key.

Fixes CVE-2026-42770

Signed-off-by: Norbert Pocs <[email protected]>

Reviewed-by: Viktor Dukhovni <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 19:56:27 2026
(cherry picked from commit 29b9df160cc5f20ee3907cce0cb271b982846bce)


  Commit: 787a6dfba81b7b09c1e05ab31396c0cd7c36b3f7
      https://github.com/openssl/openssl/commit/787a6dfba81b7b09c1e05ab31396c0cd7c36b3f7
  Author: Viktor Dukhovni <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M providers/implementations/ciphers/cipher_aes_ocb.c
    M test/evp_extra_test.c

  Log Message:
  -----------
  Apply the buffered IV on the AES-OCB EVP_Cipher() path

aes_ocb_cipher(), the OCB provider's OSSL_FUNC_CIPHER_CIPHER slot,
processed input without flushing the buffered IV into the OCB
context.  Effective nonce was 0 regardless of the caller's IV;
EVP_*Final_ex() then emitted a tag depending only on (key, iv).
This gave (key, nonce) reuse and single-query universal forgery on
the EVP_Cipher() path.

Apply update_iv() at the head of aes_ocb_cipher() to mirror the
streaming handler.  The matching GCM one-shot does this already.

Add a cross-driver round-trip test for AES-{GCM,CCM,OCB} and
ChaCha20-Poly1305 in test/evp_extra_test.c.  Each cipher is
exercised with and without AAD; the no-AAD case is needed because
any prior EVP_CipherUpdate(NULL, aad, ...) routes through the
streaming handler and applies the IV itself, masking the bug.

Fixes CVE-2026-45445

Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 20:02:00 2026
(cherry picked from commit 50c95c5d1e83f4f46a555dfa7fd9c632d3eba9dc)


  Commit: eec5e9bf0d867333b8495e456f5235d225798a68
      https://github.com/openssl/openssl/commit/eec5e9bf0d867333b8495e456f5235d225798a68
  Author: Dmitry Belyavskiy <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M providers/implementations/ciphers/cipher_aes_gcm_siv_hw.c
    M providers/implementations/ciphers/cipher_aes_siv.c
    M test/evp_extra_test.c

  Log Message:
  -----------
  Fix handling of empty-ciphertext messages in AES-GCM-SIV and AES-SIV

AES-GCM-SIV: EVP_DecryptFinal_ex Accepts All-Zero Tag for Empty-Ciphertext
Messages.

AES-SIV: EVP_DecryptUpdate_ex Accepts All-Zero Tag for Empty-Ciphertext
Messages on context reuse.

Fixes CVE-2026-45446

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 20:12:25 2026
(cherry picked from commit aeb5000b0c66772bad600e9cc241a4c902e6d8b9)


  Commit: c505d7559da5d5f9f2c3913c6883a5562ce7273e
      https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e
  Author: Igor Ustinov <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/pkcs7/pk7_smime.c

  Log Message:
  -----------
  Fix possible use-after-free in OpenSSL PKCS7_verify()

Fixes CVE-2026-45447

Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 20:22:50 2026
(cherry picked from commit b4fbcf9fd25f781b17b763e3ec84d6b6dc096f6e)


  Commit: 167bf96c77a8f9d139d53ae098e8b816582d9f45
      https://github.com/openssl/openssl/commit/167bf96c77a8f9d139d53ae098e8b816582d9f45
  Author: Igor Ustinov <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M test/recipes/80-test_cms.t
    A test/smime-eml/pkcs7-empty-digest-set.eml

  Log Message:
  -----------
  Test for CVE-2026-45447 (UAF in PKCS7_verify)

The test data were created with a tool developed by
Thai Duong <[email protected]>.

Reviewed-by: Eugene Syromiatnikov <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 20:22:52 2026
(cherry picked from commit a60763a01490bd747ab716342b87d55bd0a27a39)


  Commit: e6f912907fc2ec82a0fd07aae55172c5e5e3d90d
      https://github.com/openssl/openssl/commit/e6f912907fc2ec82a0fd07aae55172c5e5e3d90d
  Author: Igor Ustinov <[email protected]>
  Date:   2026-06-08 (Mon, 08 Jun 2026)

  Changed paths:
    M crypto/crmf/crmf_lib.c

  Log Message:
  -----------
  Fix potential NULL dereference in OSSL_CRMF_ENCRYPTEDVALUE_decrypt()

Check that 'parameter' != NULL before dereferencing in
OSSL_CRMF_ENCRYPTEDVALUE_decrypt().

Fixes CVE-2026-42767

Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Mon Jun  8 20:38:27 2026
(cherry picked from commit 309db711d13a6fdc6f8a719d8b4415a04dbf3bc5)


  Commit: 1a46e442b0021fa1d87dfdca800aea70aae9624c
      https://github.com/openssl/openssl/commit/1a46e442b0021fa1d87dfdca800aea70aae9624c
  Author: Eugene Syromiatnikov <[email protected]>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M CHANGES.md
    M NEWS.md

  Log Message:
  -----------
  CHANGES.md, NEWS.md: update for 3.6.3

3.6.3 CHANGES.md includes the following:
 * CVE-2026-7383, CVE-2026-9076, CVE-2026-34180, CVE-2026-34181,
   CVE-2026-34182, CVE-2026-34183, CVE-2026-35188, CVE-2026-42764,
   CVE-2026-42765, CVE-2026-42766, CVE-2026-42767, CVE-2026-42768,
   CVE-2026-42769, CVE-2026-42770, CVE-2026-45445, CVE-2026-45446,
   CVE-2026-45447
 * https://github.com/openssl/openssl/pull/30626
   "TLSv1.3: Fix server not sending NewSessionTicket after ciphersuite mismatch"
 * https://github.com/openssl/openssl/pull/31058
   "Validate that a PSK identity is at least one byte long"
 * https://github.com/openssl/openssl/pull/31146
   "ktls: Fix invalid memory access on retry with moving write buffer"

3.6.3 NEWS.md includes the following:
 * CVE-2026-7383, CVE-2026-9076, CVE-2026-34180, CVE-2026-34181,
   CVE-2026-34182, CVE-2026-34183, CVE-2026-35188, CVE-2026-42764,
   CVE-2026-42765, CVE-2026-42766, CVE-2026-42767, CVE-2026-42768,
   CVE-2026-42769, CVE-2026-42770, CVE-2026-45445, CVE-2026-45446,
   CVE-2026-45447

Signed-off-by: Eugene Syromiatnikov <[email protected]>

Reviewed-by: Norbert Pocs <[email protected]>
Reviewed-by: Milan Broz <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
MergeDate: Tue Jun  9 11:19:21 2026


  Commit: 9ba2cb5f2a0eeb06d4cb88e1b7cc800181053bff
      https://github.com/openssl/openssl/commit/9ba2cb5f2a0eeb06d4cb88e1b7cc800181053bff
  Author: openssl-machine <[email protected]>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M .github/workflows/oss-fuzz.yml
    M Configure
    M apps/enc.c
    M apps/list.c
    M apps/skeyutl.c
    M apps/speed.c
    M apps/testdsa.h
    M apps/testrsa.h
    M crypto/aes/asm/aes-sha1-armv8.pl
    M crypto/aes/asm/aes-sha256-armv8.pl
    M crypto/aes/asm/aesfx-sparcv9.pl
    M crypto/asn1/a_d2i_fp.c
    M crypto/asn1/a_mbstr.c
    M crypto/asn1/asn1_lib.c
    M crypto/asn1/asn_mime.c
    M crypto/asn1/tasn_dec.c
    M crypto/bio/bss_dgram_pair.c
    M crypto/bn/bn_const.c
    M crypto/bn/bn_mod.c
    M crypto/cast/cast_s.h
    M crypto/chacha/asm/chachap10-ppc.pl
    M crypto/cmp/cmp_genm.c
    M crypto/cms/cms_enc.c
    M crypto/cms/cms_env.c
    M crypto/cms/cms_pwri.c
    M crypto/crmf/crmf_lib.c
    M crypto/des/fcrypt.c
    M crypto/dso/dso_win32.c
    M crypto/ec/curve448/scalar.c
    M crypto/ec/curve448/word.h
    M crypto/ec/ec_curve.c
    M crypto/ec/ecp_s390x_nistp.c
    M crypto/ec/ecp_sm2p256.c
    M crypto/evp/asymcipher.c
    M crypto/evp/m_sigver.c
    M crypto/evp/s_lib.c
    M crypto/ffc/ffc_params.c
    M crypto/hpke/hpke_util.c
    M crypto/md2/md2_dgst.c
    M crypto/modes/wrap128.c
    M crypto/objects/obj_dat.c
    M crypto/objects/obj_lib.c
    M crypto/param_build_set.c
    M crypto/pkcs7/pk7_smime.c
    M crypto/rc2/rc2_skey.c
    M crypto/slh_dsa/slh_dsa_key.c
    M crypto/sm2/sm2_crypt.c
    M crypto/sm2/sm2_sign.c
    M crypto/x509/v3_ist.c
    M demos/cipher/aeskeywrap.c
    M demos/cipher/ariacbc.c
    M demos/digest/EVP_MD_demo.c
    M demos/encrypt/rsa_encrypt.h
    M demos/mac/cmac-aes256.c
    M demos/mac/hmac-sha512.c
    M demos/signature/EVP_EC_Signature_demo.h
    M doc/man1/openssl-pkcs8.pod.in
    M doc/man1/openssl-rehash.pod.in
    M doc/man1/openssl-s_client.pod.in
    M doc/man1/openssl-s_server.pod.in
    M doc/man1/openssl-smime.pod.in
    M doc/man3/BIO_s_bio.pod
    M doc/man3/BN_add.pod
    M doc/man3/CMS_decrypt.pod
    M doc/man3/OPENSSL_secure_malloc.pod
    M doc/man3/OSSL_HTTP_REQ_CTX.pod
    M doc/man3/OSSL_HTTP_parse_url.pod
    M doc/man3/OSSL_HTTP_transfer.pod
    M doc/man3/PKCS7_decrypt.pod
    M doc/man3/SSL_CTX_set_session_cache_mode.pod
    M doc/man3/SSL_CTX_set_session_id_context.pod
    M doc/man3/SSL_CTX_set_tlsext_servername_callback.pod
    M doc/man3/d2i_X509.pod
    M doc/man7/EVP_CIPHER-AES.pod
    M doc/man7/ossl-guide-migration.pod
    M doc/man7/provider-asym_cipher.pod
    M doc/man7/provider-signature.pod
    M fuzz/dtlsserver.c
    M fuzz/server.c
    M include/crypto/riscv_arch.h
    M include/internal/cryptlib.h
    M include/internal/quic_cfq.h
    M include/internal/quic_channel.h
    M include/internal/quic_fifd.h
    M include/internal/quic_stream_map.h
    M include/internal/rcu.h
    M include/openssl/bn.h
    M include/openssl/ssl.h.in
    M include/openssl/x509_acert.h.in
    M providers/defltprov.c
    M providers/fips/self_test_data.inc
    M providers/implementations/ciphers/cipher_aes_gcm_hw_rv64i.inc
    M providers/implementations/ciphers/cipher_aes_gcm_siv_hw.c
    M providers/implementations/ciphers/cipher_aes_siv.c
    M providers/implementations/encode_decode/ml_dsa_codecs.c
    M providers/implementations/exchange/dh_exch.c.in
    M providers/implementations/include/prov/implementations.h
    M providers/implementations/include/prov/ml_dsa_codecs.h
    M providers/implementations/include/prov/ml_kem_codecs.h
    M providers/implementations/keymgmt/ecx_kmgmt.c.in
    M providers/implementations/keymgmt/mlx_kmgmt.c.in
    M providers/implementations/macs/poly1305_prov.c.in
    M providers/implementations/signature/slh_dsa_sig.c.in
    M ssl/quic/quic_ackm.c
    M ssl/quic/quic_cfq.c
    M ssl/quic/quic_fifd.c
    M ssl/quic/quic_port.c
    M ssl/quic/quic_record_rx.c
    M ssl/quic/quic_record_tx.c
    M ssl/quic/quic_txp.c
    M ssl/record/methods/ktls_meth.c
    M ssl/ssl_ciph.c
    M ssl/ssl_rsa.c
    M ssl/statem/extensions_cust.c
    M ssl/statem/extensions_srvr.c
    M ssl/statem/statem.c
    M ssl/statem/statem_clnt.c
    M ssl/t1_trce.c
    M test/bad_dtls_test.c
    M test/bio_tfo_test.c
    M test/chacha_internal_test.c
    M test/cipherlist_test.c
    M test/destest.c
    M test/dsatest.c
    M test/ectest.c
    M test/endecode_test.c
    M test/enginetest.c
    M test/evp_extra_test2.c
    M test/evp_kdf_test.c
    M test/evp_libctx_test.c
    M test/evp_pkey_provided_test.c
    M test/evp_skey_test.c
    M test/fake_cipherprov.c
    M test/helpers/predefined_dhparams.c
    M test/hpke_test.c
    M test/ideatest.c
    M test/load_key_certs_crls_memfail.c
    M test/mem_alloc_test.c
    M test/ml_kem_evp_extra_test.c
    M test/param_build_test.c
    M test/pbetest.c
    M test/pkcs12_format_test.c
    M test/quic_record_test.c
    M test/quic_txp_test.c
    M test/quic_wire_test.c
    M test/radix/quic_tests.c
    M test/radix/terp.c
    M test/recipes/90-test_load_key_certs_crls_memfail.t
    M test/siphash_internal_test.c
    M test/stack_test.c
    M test/x509_test.c

  Log Message:
  -----------
  Copyright year updates


Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Saša Nedvědický <[email protected]>
MergeDate: Tue Jun  9 11:44:36 2026
Release: yes


  Commit: ccea79679815f31417a5a6358751f7092aa606c4
      https://github.com/openssl/openssl/commit/ccea79679815f31417a5a6358751f7092aa606c4
  Author: openssl-machine <[email protected]>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M providers/fips-sources.checksums
    M providers/fips.checksum
    M providers/fips.module.sources

  Log Message:
  -----------
  make update


Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Saša Nedvědický <[email protected]>
MergeDate: Tue Jun  9 11:46:57 2026
Release: yes


  Commit: aae016bfd52fcad2bc9657c2c782cfdf73b1ed5f
      https://github.com/openssl/openssl/commit/aae016bfd52fcad2bc9657c2c782cfdf73b1ed5f
  Author: openssl-machine <[email protected]>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M CHANGES.md
    M NEWS.md
    M VERSION.dat

  Log Message:
  -----------
  Prepare for release of 3.6.3


Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Saša Nedvědický <[email protected]>
MergeDate: Tue Jun  9 11:46:58 2026
Release: yes


  Commit: 82c50398a250271251477b9e3da73fed09576293
      https://github.com/openssl/openssl/commit/82c50398a250271251477b9e3da73fed09576293
  Author: openssl-machine <[email protected]>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M CHANGES.md
    M NEWS.md
    M VERSION.dat

  Log Message:
  -----------
  Prepare for 3.6.4


Reviewed-by: Neil Horman <[email protected]>
Reviewed-by: Saša Nedvědický <[email protected]>
MergeDate: Tue Jun  9 11:47:10 2026
Release: yes


Compare: https://github.com/openssl/openssl/compare/222c74b38611...82c50398a250

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