| Name | CVE-2026-61626 |
| Description | GHSA-5gf7-wjfm-vmvm: Out-of-bounds bit clears for negative Matroska ReadOrder values |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libass (PTS) | bullseye | 1:0.15.0-2 | fixed |
| bookworm | 1:0.17.1-1 | fixed |
| trixie | 1:0.17.3-1+deb13u1 | fixed |
| forky, sid | 1:0.17.5-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libass | source | bullseye | (not affected) | | | |
| libass | source | bookworm | (not affected) | | | |
| libass | source | trixie | (not affected) | | | |
| libass | source | (unstable) | 1:0.17.5-1 | | | |
Notes
[trixie] - libass <not-affected> (Vulnerable code not present)
[bookworm] - libass <not-affected> (Vulnerable code not present)
[bullseye] - libass <not-affected> (Vulnerable code not present)
https://github.com/libass/libass/security/advisories/GHSA-5gf7-wjfm-vmvm
Introduced with: https://github.com/libass/libass/commit/dcc9eb722ebd485d2ed0e21c261b0a1b05497154 (0.17.4)
Fixed with: https://github.com/libass/libass/commit/23da65a130bb8c5b2cf0c7df0dd7d424607f98f1 (0.17.5)
https://github.com/libass/libass/issues/937