DEBIAN-CVE-2026-5089
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-5089
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5089.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-5089
- Upstream
- Published
- 2026-05-12T17:16:21Z
- Modified
- 2026-09-14T17:03:17Z
- Severity
-
- 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- [none]
- Details
-
YAML::Syck versions before 1.38 for Perl has an out-of-bounds read. The base60 (sexagesimal) parsing code in perl_syck.h has a buffer underflow bug in both int#base60 and float#base60 handlers. When processing the leftmost segment of a colon-separated value (e.g., the 1 in 1:30:45), the inner while loop can decrement a pointer past the start of the string buffer: while ( colon >= ptr && *colon != ':' ) { colon--; } if ( *colon == ':' ) *colon = '\0'; // colon may be ptr-1 here When no colon is found (final/leftmost segment), colon becomes ptr-1, and the subsequent *colon dereference reads one byte before the allocated buffer.
- References
Affected packages
Debian:12 / libyaml-syck-perl
Package
- Name
- libyaml-syck-perl
- Purl
- pkg:deb/debian/libyaml-syck-perl?arch=source&distro=bookworm
Debian:13 / libyaml-syck-perl
Package
- Name
- libyaml-syck-perl
- Purl
- pkg:deb/debian/libyaml-syck-perl?arch=source&distro=trixie
Debian:14 / libyaml-syck-perl
Package
- Name
- libyaml-syck-perl
- Purl
- pkg:deb/debian/libyaml-syck-perl?arch=source&distro=forky