SUSE alert SUSE-SU-2026:23210-1 (patch)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2026:23210-1: low: Security update for patch
Date:
             
 
Tue, 25 Aug 2026 12:32:38 -0000
Message-ID:
             
 
<178766115828.2178.7345689486969322399@faebc920c5aa>
# Security update for patch

Announcement ID: SUSE-SU-2026:23210-1  
Release Date: 2026-08-18T11:03:26Z  
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 Micro 6.0

  
  
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 Micro 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-851=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * patch-debugsource-2.7.6-4.1
    * patch-debuginfo-2.7.6-4.1
    * patch-2.7.6-4.1

## 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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