Home / mailings [SECURITY] [DSA 6613-1] zlib security update
Posted on 07 November 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6613-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
November 07, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------
Package : zlib
CVE ID : CVE-2026-27171 CVE-2026-76844 CVE-2026-85091
Debian Bug : 1128336 1146895 1153063
Several vulnerabilities were discovered in the zlib compression library,
which could result in denial of service or potentially the execution of
arbitrary code if specially crafted input is processed.
For the stable distribution (trixie), these problems have been fixed in
version 1:1.3.dfsg+really1.3.1-1+deb13u1.
We recommend that you upgrade your zlib packages.
For the detailed security status of zlib please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/zlib
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
