SUSE-SU-2026:5160-1: moderate: Security update for tar

[SLE-SECURITY-UPDATES]

# Security update for tar

Announcement ID: SUSE-SU-2026:5160-1  
Release Date: 2026-11-10T09:41:16Z  
Rating: moderate  
References:

  * bsc#1274489
  * bsc#1274490
  * bsc#1280941

  
Cross-References:

  * CVE-2026-18477
  * CVE-2026-18508

  
CVSS scores:

  * CVE-2026-18477 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-18477 ( NVD ):  4.4 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-18508 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-18508 ( NVD ):  4.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

  
Affected Products:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * 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 two vulnerabilities and has one security fix can now be
installed.

## Description:

This update for tar fixes the following issues:

  * CVE-2026-18477: TOCTOU in incremental dumpdir 'X' rename handling allows
    restore path escape (bsc#1274489).
  * CVE-2026-18508: --one-top-level hardlink targets not confined to top-level
    directory enabling arbitrary file overwrite (bsc#1274490).

## 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-5.4-2026-5160

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-5160

  * SUSE Linux Enterprise Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-5160

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-5160

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
    * tar-1.34-150000.3.45.1
    * tar-debuginfo-1.34-150000.3.45.1
    * tar-debugsource-1.34-150000.3.45.1
  * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
    * tar-1.34-150000.3.45.1
    * tar-debuginfo-1.34-150000.3.45.1
    * tar-debugsource-1.34-150000.3.45.1
  * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
    * tar-1.34-150000.3.45.1
    * tar-debuginfo-1.34-150000.3.45.1
    * tar-debugsource-1.34-150000.3.45.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * tar-rmt-debuginfo-1.34-150000.3.45.1
    * tar-debuginfo-1.34-150000.3.45.1
    * tar-debugsource-1.34-150000.3.45.1
    * tar-1.34-150000.3.45.1
    * tar-rmt-1.34-150000.3.45.1
  * Basesystem Module 15-SP7 (noarch)
    * tar-lang-1.34-150000.3.45.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-18477.html
  * https://www.suse.com/security/cve/CVE-2026-18508.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1274489
  * https://bugzilla.suse.com/show_bug.cgi?id=1274490
  * https://bugzilla.suse.com/show_bug.cgi?id=1280941

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