| Name | CVE-2026-2219 |
| Description | It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU). |
| 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) |
| Debian Bugs | 1129722 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| dpkg (PTS) | bullseye | 1.20.13 | fixed |
| bullseye (security) | 1.20.10 | fixed |
| bookworm | 1.21.22 | vulnerable |
| trixie | 1.22.21 | vulnerable |
| forky, sid | 1.23.7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dpkg | source | bullseye | (not affected) | | | |
| dpkg | source | (unstable) | 1.23.6 | | | 1129722 |
Notes
[trixie] - dpkg <no-dsa> (Minor issue; can be fixed in point release)
[bookworm] - dpkg <no-dsa> (Minor issue; can be fixed in point release)
[bullseye] - dpkg <not-affected> (Vulnerable code introduced later)
Introduced with: https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=2c2f7066bd8c3209762762fa6905fa567b08ca5a (1.21.18)
Fixed by: https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=6610297a62c0780dd0e80b0e302ef64fdcc9d313 (1.23.6)