SUSE-SU-2026:23355-1: moderate: Security update for cpio

[SLE-SECURITY-UPDATES]

# Security update for cpio

Announcement ID: SUSE-SU-2026:23355-1  
Release Date: 2026-08-28T11:00:32Z  
Rating: moderate  
References:

  * bsc#1274856
  * bsc#1274857
  * bsc#1274858

  
Cross-References:

  * CVE-2026-66484
  * CVE-2026-66485
  * CVE-2026-66486

  
CVSS scores:

  * CVE-2026-66484 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-66484 ( NVD ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/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-2026-66485 ( SUSE ):  5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-66485 ( 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-2026-66486 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-66486 ( NVD ):  4.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/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

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for cpio fixes the following issues:

  * CVE-2026-66484: improper sanitization in the tar archive extraction
    functionality allows for the creation of hard links outside intended
    directory via malicious tar archives (bsc#1274856).
  * CVE-2026-66485: improper memory management in the `make_path` function when
    allocating memory allows for denial of service via crafted archives
    (bsc#1274857).
  * CVE-2026-66486: improper encoding or escaping of output in the archive
    member listing functionality allows for terminal control sequence injection
    via crafted archive member names (bsc#1274858).

## 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 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-694=1

## Package List:

  * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    * cpio-debugsource-2.15-slfo.1.1_3.1
    * cpio-2.15-slfo.1.1_3.1
    * cpio-debuginfo-2.15-slfo.1.1_3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-66484.html
  * https://www.suse.com/security/cve/CVE-2026-66485.html
  * https://www.suse.com/security/cve/CVE-2026-66486.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1274856
  * https://bugzilla.suse.com/show_bug.cgi?id=1274857
  * https://bugzilla.suse.com/show_bug.cgi?id=1274858

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