CVE-2026-121942

NameCVE-2026-121942
DescriptionZBar through 0.23.95 contains an out-of-bounds read vulnerability in _zbar_sq_decode() in zbar/sqcode.c that allows attackers to read heap memory outside the image buffer via crafted SQ code images. Attackers can supply an image with a skewed SQ code finder pattern near the edge, producing unchecked sample coordinates that crash the decoder and leak bytes into output.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1153258

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
zbar (PTS)bookworm, bookworm (security)0.23.92-7+deb12u1vulnerable
trixie0.23.93-8vulnerable
forky, sid0.23.95-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
zbarsource(unstable)(unfixed)1153258

Notes

[trixie] - zbar <no-dsa> (Minor issue)
https://github.com/mchehab/zbar/issues/351

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