[DSA 6417-1] libheif security update

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Debian Security Advisory DSA-6417-1                   [email protected]
https://www.debian.org/security/                                  Aron Xu
August 08, 2026                       https://www.debian.org/security/faq
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Package        : libheif
CVE ID         : CVE-2025-68431 CVE-2026-32740 CVE-2026-32741 CVE-2026-32882 
                 CVE-2026-47178 CVE-2026-47247 CVE-2026-47709 CVE-2026-47714 
                 CVE-2026-48029 CVE-2026-49271 CVE-2026-62289 CVE-2026-62292
Debian Bug     : 

Multiple security issues were discovered in libheif, an ISO/IEC 23008-12
HEIF and AVIF image file format decoder and encoder, which may result in
denial of service, the disclosure of sensitive memory contents or,
potentially, the execution of arbitrary code if a malformed image file is
processed. 

Note that in the fix for CVE-2026-47178, a heap out-of-bounds write in the
uncompressed tile decoder, the affected format combinations are now rejected
with heif_error_Unsupported_feature: uncompressed images with 4:2:0 or 4:2:2
chroma subsampling that are tiled, or that use row or pixel interleave.
Upstream corrected the offending arithmetic, but only after a restructuring
of the uncompressed decoder that is not present in the version shipped in
the stable distribution. Images in these configurations will no longer
decode.

For the stable distribution (trixie), these problems have been fixed in
version 1.19.8-1+deb13u1.

We recommend that you upgrade your libheif packages.

For the detailed security status of libheif please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libheif

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]
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