Slackware alert SSA:2026-014-01 (libpng)

From:
             
 
Slackware Security Team <security@slackware.com>
To:
             
 
slackware-security@slackware.com
Subject:
             
 
[slackware-security]  libpng (SSA:2026-014-01)
Date:
             
 
Wed, 14 Jan 2026 14:30:23 -0800
Message-ID:
             
 
<alpine.LNX.2.02.2601141429590.8727@connie.slackware.com>

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[slackware-security]  libpng (SSA:2026-014-01)

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-1.6.54-i586-1_slack15.0.txz:  Upgraded.
  This update fixes security issues:
  Heap buffer over-read in the libpng simplified API function
  png_image_finish_read() when processing interlaced 16-bit PNGs with 8-bit
  output format and non-minimal row stride.
  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.
  For more information, see:
    https://www.cve.org/CVERecord?id=CVE-2026-22695
    https://www.cve.org/CVERecord?id=CVE-2026-22801
  (* 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/patc...

Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/pa...

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/s...

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current...


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

Slackware 15.0 package:
19a8814a62c441d9fca8f8fe740de783  libpng-1.6.54-i586-1_slack15.0.txz

Slackware x86_64 15.0 package:
0edc1119768449104dab38a6044bd777  libpng-1.6.54-x86_64-1_slack15.0.txz

Slackware -current package:
0b6f7b32f0c861a45d5adfaad5b14899  l/libpng-1.6.54-i686-1.txz

Slackware x86_64 -current package:
e8ffbb237f4e419652de899d0d43803c  l/libpng-1.6.54-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg libpng-1.6.54-i586-1_slack15.0.txz


+-----+

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

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