SUSE-SU-2026:3455-1: moderate: Security update for gawk

Mon Aug 3 17:02:31 UTC 2026

# Security update for gawk

Announcement ID: SUSE-SU-2026:3455-1  
Release Date: 2026-08-03T11:47:01Z  
Rating: moderate  
References:

  * bsc#1271351
  * bsc#1271352
  * bsc#1271354

Cross-References:

  * CVE-2026-40467
  * CVE-2026-40468
  * CVE-2026-40553

CVSS scores:

  * CVE-2026-40467 ( SUSE ):  5.1
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-40467 ( SUSE ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-40467 ( NVD ):  5.1
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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-2026-40467 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40468 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L
  * CVE-2026-40468 ( SUSE ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-40468 ( NVD ):  2.1
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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-2026-40468 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-40553 ( SUSE ):  5.1
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-40553 ( SUSE ):  5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-40553 ( NVD ):  5.1
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/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-2026-40553 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves three vulnerabilities can now be installed.

## Description:

This update for gawk fixes the following issues:

  * CVE-2026-40467: use-after-free in the `io.c` program file via the
    `do_getline_redir()` routine (bsc#1271351).
  * CVE-2026-40468: integer overflow in the `builtin.c` program file
    (bsc#1271352).
  * CVE-2026-40553: buffer overflow in the `extension/readdir.c` program file
    via the `ftype()` routine (bsc#1271354).

## 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 Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3455=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3455=1

  * SUSE Linux Enterprise Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-3455=1

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3455=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3455=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3455=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1
  * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1
  * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1
  * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
    * gawk-debuginfo-4.2.1-150000.3.6.1
    * gawk-debugsource-4.2.1-150000.3.6.1
    * gawk-4.2.1-150000.3.6.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-40467.html
  * https://www.suse.com/security/cve/CVE-2026-40468.html
  * https://www.suse.com/security/cve/CVE-2026-40553.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1271351
  * https://bugzilla.suse.com/show_bug.cgi?id=1271352
  * https://bugzilla.suse.com/show_bug.cgi?id=1271354

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