Home / mailings [SECURITY] [DSA 6138-1] libpng1.6 security update
Posted on 17 February 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6138-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
February 17, 2026 https://www.debian.org/security/faq
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Package : libpng1.6
CVE ID : CVE-2026-25646
A buffer overflow was discovered in libpng, a library implementing an
interface for reading and writing PNG (Portable Network Graphics) files,
which could result in denial of service or potentially the execution
of arbitrary code.
For the oldstable distribution (bookworm), this problem has been fixed
in version 1.6.39-2+deb12u3. This update also includes two additional
security fixes (CVE-2026-22801 and CVE-2026-22695), which had been
lined up for the next Bookworm point release.
For the stable distribution (trixie), this problem has been fixed in
version 1.6.48-1+deb13u3. This update also includes two additional
security fixes (CVE-2026-22801 and CVE-2026-22695), which had been
lined up for the next Trixie point release.
We recommend that you upgrade your libpng1.6 packages.
For the detailed security status of libpng1.6 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libpng1.6
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
