Security update for libxml2

Announcement ID: SUSE-SU-2025:20564-1
Release Date: 2025-08-21T08:20:56Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2025-49794 ( SUSE ): 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  • CVE-2025-49794 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  • CVE-2025-49794 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  • CVE-2025-49795 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2025-49795 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-49795 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-49796 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  • CVE-2025-49796 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  • CVE-2025-6021 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2025-6021 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-6021 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-6170 ( SUSE ): 2.0 CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  • CVE-2025-6170 ( SUSE ): 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  • CVE-2025-6170 ( NVD ): 2.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  • CVE-2025-6170 ( NVD ): 2.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  • CVE-2025-7425 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:H
  • CVE-2025-7425 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H
  • CVE-2025-7425 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H
Affected Products:
  • SUSE Linux Micro 6.0

An update that solves six vulnerabilities can now be installed.

Description:

This update for libxml2 fixes the following issues:

  • CVE-2025-6021: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow in libxml2 [bsc#1244580]
  • CVE-2025-6170: stack buffer overflow may lead to a crash [bsc#1244700]
  • CVE-2025-7425: Heap Use-After-Free in libxslt caused by atype corruption in xmlAttrPtr [bsc#1246296]
  • CVE-2025-49794: heap use after free (UAF) can lead to Denial of service (DoS) [bsc#1244554]
  • CVE-2025-49795: null pointer dereference may lead to Denial of service (DoS) [bsc#1244555]
  • CVE-2025-49796: type confusion may lead to Denial of service (DoS) [bsc#1244557]

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Micro 6.0
    zypper in -t patch SUSE-SLE-Micro-6.0-429=1

Package List:

  • SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    • libxml2-tools-2.11.6-10.1
    • libxml2-2-debuginfo-2.11.6-10.1
    • libxml2-2-2.11.6-10.1
    • libxml2-debugsource-2.11.6-10.1
    • libxml2-tools-debuginfo-2.11.6-10.1

References: