Your message dated Sat, 21 Feb 2026 20:07:33 +0000
with message-id <[email protected]>
and subject line Bug#1125444: fixed in libpng1.6 1.6.39-2+deb12u2
has caused the Debian Bug report #1125444,
regarding libpng1.6: CVE-2026-22801: Integer truncation causing heap buffer
over-read in png_image_write_*
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
1125444: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125444
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: libpng1.6
Version: 1.6.53-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Control: found -1 1.6.26-1
Hi,
The following vulnerability was published for libpng1.6.
CVE-2026-22801[0]:
| LIBPNG is a reference library for use in applications that read,
| create, and manipulate PNG (Portable Network Graphics) raster image
| files. From 1.6.26 to 1.6.53, there is an integer truncation in the
| libpng simplified write API functions png_write_image_16bit and
| png_write_image_8bit causes heap buffer over-read when the caller
| provides a negative row stride (for bottom-up image layouts) or a
| stride exceeding 65535 bytes. The bug was introduced in libpng
| 1.6.26 (October 2016) by casts added to silence compiler warnings on
| 16-bit systems. This vulnerability is fixed in 1.6.54.
If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
For further information see:
[0] https://security-tracker.debian.org/tracker/CVE-2026-22801
https://www.cve.org/CVERecord?id=CVE-2026-22801
[1] https://github.com/pnggroup/libpng/security/advisories/GHSA-vgjq-8cw5-ggw8
Regards,
Salvatore
--- End Message ---
--- Begin Message ---
Source: libpng1.6
Source-Version: 1.6.39-2+deb12u2
Done: Tobias Frost <[email protected]>
We believe that the bug you reported is fixed in the latest version of
libpng1.6, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Tobias Frost <[email protected]> (supplier of updated libpng1.6 package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sat, 24 Jan 2026 14:15:14 +0100
Source: libpng1.6
Architecture: source
Version: 1.6.39-2+deb12u2
Distribution: bookworm
Urgency: medium
Maintainer: Maintainers of libpng1.6 packages <[email protected]>
Changed-By: Tobias Frost <[email protected]>
Closes: 1125443 1125444
Changes:
libpng1.6 (1.6.39-2+deb12u2) bookworm; urgency=medium
.
* Backporting fixes from 1.6.54 for oldstable:
- CVE-2026-22801 - Heap buffer over-read (Closes: #1125444
- CVE-2026-22695 - Heap buffer over-read (Closes: #1125443)
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