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[slackware-security]  libpng (SSA:2025-327-01)

New libpng packages are available for Slackware 15.0 and -current to
fix security issues.


Here are the details from the Slackware 15.0 ChangeLog:
+--------------------------+
patches/packages/libpng-1.6.51-i586-1_slack15.0.txz:  Upgraded.
  This update fixes security issues:
  Fixed CVE-2025-64505 (moderate severity):
  Heap buffer overflow in `png_do_quantize` via malformed palette index.
  (Reported by Samsung; analyzed by Fabio Gritti.)
  Fixed CVE-2025-64506 (moderate severity):
  Heap buffer over-read in `png_write_image_8bit` with 8-bit input and
  `convert_to_8bit` enabled.
  (Reported by Samsung and <weijinjinnihao@users.noreply.github.com>;
  analyzed by Fabio Gritti.)
  Fixed CVE-2025-64720 (high severity):
  Buffer overflow in `png_image_read_composite` via incorrect palette
  premultiplication.
  (Reported by Samsung; analyzed by John Bowler.)
  Fixed CVE-2025-65018 (high severity):
  Heap buffer overflow in `png_combine_row` triggered via
  `png_image_finish_read`.
  (Reported by <yosiimich@users.noreply.github.com>.)
  For more information, see:
    https://www.cve.org/CVERecord?id=CVE-2025-64505
    https://www.cve.org/CVERecord?id=CVE-2025-64506
    https://www.cve.org/CVERecord?id=CVE-2025-64720
    https://www.cve.org/CVERecord?id=CVE-2025-65018
  (* Security fix *)
+--------------------------+


Where to find the new packages:
+-----------------------------+

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project!  :-)

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/libpng-1.6.51-i586-1_slack15.0.txz

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/libpng-1.6.51-x86_64-1_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libpng-1.6.51-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libpng-1.6.51-x86_64-1.txz


MD5 signatures:
+-------------+

Slackware 15.0 package:
f5dbfd6dff4bbdee3c9350914afe5de8  libpng-1.6.51-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
0b421d8231739f499023560ea4ca926c  libpng-1.6.51-x86_64-1_slack15.0.txz

Slackware -current package:
752c23a7fdbdf43a17d026c6859327b9  l/libpng-1.6.51-i686-1.txz

Slackware x86_64 -current package:
5a43a39f55fb7606daf43062e57dcdcc  l/libpng-1.6.51-x86_64-1.txz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg libpng-1.6.51-i586-1_slack15.0.txz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com

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