SUSE-SU-2026:21257-1: important: Security update for libcap

[SLE-UPDATES]

# Security update for libcap

Announcement ID: SUSE-SU-2026:21257-1  
Release Date: 2026-04-20T17:04:13Z  
Rating: important  
References:

  * bsc#1261809

  
Cross-References:

  * CVE-2026-4878

  
CVSS scores:

  * CVE-2026-4878 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-4878 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-4878 ( NVD ):  6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for libcap fixes the following issue:

  * CVE-2026-4878: local privilege escalation through file capability injection
    due to TOCTOU race condition in `cap_set_file()` (bsc#1261809).

## 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-6.1-494=1

## Package List:

  * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    * libcap2-2.69-slfo.1.1_2.1
    * libcap2-debuginfo-2.69-slfo.1.1_2.1
    * libcap-debugsource-2.69-slfo.1.1_2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-4878.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261809

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