SUSE-SU-2026:2922-1: low: Security update for patch

[SLE-UPDATES]

# Security update for patch

Announcement ID: SUSE-SU-2026:2922-1  
Release Date: 2026-07-13T17:47:13Z  
Rating: low  
References:

  * bsc#1194037
  * bsc#1271166
  * bsc#1271167

  
Cross-References:

  * CVE-2021-45261
  * CVE-2026-56288
  * CVE-2026-56289

  
CVSS scores:

  * CVE-2021-45261 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2021-45261 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-56288 ( SUSE ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-56288 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-56288 ( NVD ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-56288 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56289 ( SUSE ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
  * CVE-2026-56289 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-56289 ( NVD ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-56289 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for patch fixes the following issues

  * CVE-2021-45261: Invalid Pointer via another_hunk function (bsc#1194037).
  * CVE-2026-56288: crafted unified-diff patch file can cause null pointer
    derefence (bsc#1271167).
  * CVE-2026-56289: improper validation of hunk line offsets can lead to denial
    of service (bsc#1271166).

## 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 Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2922=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * patch-2.7.5-8.14.1
    * patch-debugsource-2.7.5-8.14.1
    * patch-debuginfo-2.7.5-8.14.1

## References:

  * https://www.suse.com/security/cve/CVE-2021-45261.html
  * https://www.suse.com/security/cve/CVE-2026-56288.html
  * https://www.suse.com/security/cve/CVE-2026-56289.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1194037
  * https://bugzilla.suse.com/show_bug.cgi?id=1271166
  * https://bugzilla.suse.com/show_bug.cgi?id=1271167

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