Home / mailings [SECURITY] [DSA 6583-1] libheif security update
Posted on 24 October 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6583-1 security@debian.org
https://www.debian.org/security/ Aron Xu
October 24, 2026 https://www.debian.org/security/faq
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Package : libheif
Multiple security issues were discovered in libheif, a library for reading
and writing HEIF and AVIF images. Processing specially crafted images
could result in denial of service through excessive resource consumption
or crashes, or disclosure of process memory. A use-after-free and
double-free affecting timestamp handling during image encoding, including
transcoding of crafted images, is also addressed.
For the stable distribution (trixie), this problem has been fixed in
version 1.23.6-2~deb13u1.
We recommend that you upgrade your libheif packages.
For the detailed security status of libheif please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libheif
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
