openSUSE-SU-2026:0273-1: important: Security update for perl-YAML-Syck

   openSUSE Security Update: Security update for perl-YAML-Syck
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2026:0273-1
Rating:             important
References:         #1265155 #1271631 #1271632 #1271633 #1271634 
                    
Cross-References:   CVE-2025-11683 CVE-2026-13713 CVE-2026-5089
                    CVE-2026-57075 CVE-2026-57076 CVE-2026-57077
                   
CVSS scores:
                    CVE-2025-11683 (SUSE): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products:
                    openSUSE Backports SLE-15-SP7
______________________________________________________________________________

   An update that fixes 6 vulnerabilities is now available.

Description:

   This update for perl-YAML-Syck fixes the following issues:

   - updated to 1.470.0 (1.47) see
     /usr/share/doc/packages/perl-YAML-Syck/Changes 1.47 Jul 13 2026
     [Security]
       - Fix four libsyck memory-safety CVEs reachable from the default
         YAML::Syck::Load() path on untrusted input with no special flags
         (reported by Paul Johnson via CPANSec, PR #213):
         - CVE-2026-57075 (CWE-125): out-of-bounds read in the base64 decoder
   caused by signed-char indexing of the decode table on !!binary input
   boo#1271632
         - CVE-2026-57076 (CWE-416): use-after-free of an anchor key string
   shared between the node and the anchors table boo#1271633
         - CVE-2026-57077 (CWE-125): one-byte out-of-bounds read in the lexer
   newline scan during block-scalar parsing (incomplete-fix follow-on to
   CVE-2025-11683) boo#1271634
         - CVE-2026-13713 (CWE-416/CWE-415): use-after-free / double-free of
   an anchor node on anchor redefinition, a remote-crash DoS from a 7-byte
   input boo#1271631
       - Harden syck_base64dec() to bounds-check each read so it cannot run
         past a non-NUL-terminated input buffer (defense-in-depth for callers
         passing raw buffers; PR #213) [Bug Fixes]
       - Fix: enforce $MaxDepth on Load to prevent C-stack exhaustion from
         deeply nested YAML/JSON input; YAML::Syck and JSON::Syck Load now
         default to 512, matching Dump (PR #204)
       - Fix: emit YAML canonical forms (.nan, .inf, -.inf) for NaN/Inf
         values in Dump so they roundtrip with ImplicitTyping instead of
         reloading as plain strings (PR #201) [Maintenance]
       - CI: add an AddressSanitizer job that builds the XS with
         -fsanitize=address and runs the suite plus the CVE trigger inputs to
   catch libsyck memory-safety defects; de-pin the libasan version so it
   tracks the runner's GCC (PR #213)

   - updated to 1.460.0 (1.46) see
     /usr/share/doc/packages/perl-YAML-Syck/Changes 1.46 May 24 2026 [Bug
     Fixes]
       - Fix: preserve string nature of numeric-looking values in Dump; pure
         strings (POK only, no IOK/NOK) are now quoted to maintain roundtrip
         fidelity (GH #199, PR #200)
       - Fix: accept trailing commas in flow sequences and mappings ([a, b,]
         and {a: 1,}), valid per YAML 1.0/1.1/1.2 spec (GH #195, PR #196)
         [Maintenance]
       - CI: upgrade install-with-cpm to v2 for compatibility with Perl
         versions prior to 5.24 in perldocker containers (GH #197, PR #198)
       - Clean up MANIFEST.SKIP: add #!include_default, remove redundant
         entries, exclude .claude/ from distribution


Patch Instructions:

   To install this openSUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - openSUSE Backports SLE-15-SP7:

      zypper in -t patch openSUSE-2026-273=1



Package List:

   - openSUSE Backports SLE-15-SP7 (aarch64 i586 ppc64le s390x x86_64):

      perl-YAML-Syck-1.470.0-bp157.2.6.1


References:

   https://www.suse.com/security/cve/CVE-2025-11683.html
   https://www.suse.com/security/cve/CVE-2026-13713.html
   https://www.suse.com/security/cve/CVE-2026-5089.html
   https://www.suse.com/security/cve/CVE-2026-57075.html
   https://www.suse.com/security/cve/CVE-2026-57076.html
   https://www.suse.com/security/cve/CVE-2026-57077.html
   https://bugzilla.suse.com/1265155
   https://bugzilla.suse.com/1271631
   https://bugzilla.suse.com/1271632
   https://bugzilla.suse.com/1271633
   https://bugzilla.suse.com/1271634