SUSE-SU-2026:4251-1: important: Security update for cjose

[SLE-SECURITY-UPDATES]

# Security update for cjose

Announcement ID: SUSE-SU-2026:4251-1  
Release Date: 2026-09-17T16:01:20Z  
Rating: important  
References:

  * bsc#1279844
  * bsc#1279846

  
Cross-References:

  * CVE-2026-53938
  * CVE-2026-53939

  
CVSS scores:

  * CVE-2026-53938 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53938 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-53938 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-53939 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-53939 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-53939 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

  
Affected Products:

  * openSUSE Leap 15.6
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for cjose fixes the following issues:

  * CVE-2026-53938: missing encrypted_key length validation during AES Key Wrap
    decryption can cause heap-based buffer overflow (bsc#1279844).
  * CVE-2026-53939: zero-filled content-encryption key generation in AES-CBC-
    HMAC JWE encryption within cjose can allow unauthorized content modification
    (bsc#1279846).

## 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 Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4251

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-4251

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-4251

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4251

## Package List:

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * libcjose0-debuginfo-0.6.1-150600.18.3.1
    * libcjose0-0.6.1-150600.18.3.1
    * cjose-debugsource-0.6.1-150600.18.3.1
    * libcjose-devel-0.6.1-150600.18.3.1
  * openSUSE Leap 15.6 (aarch64 i586 ppc64le s390x x86_64)
    * libcjose0-debuginfo-0.6.1-150600.18.3.1
    * libcjose0-0.6.1-150600.18.3.1
    * cjose-debugsource-0.6.1-150600.18.3.1
    * libcjose-devel-0.6.1-150600.18.3.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libcjose0-debuginfo-0.6.1-150600.18.3.1
    * libcjose0-0.6.1-150600.18.3.1
    * cjose-debugsource-0.6.1-150600.18.3.1
    * libcjose-devel-0.6.1-150600.18.3.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * libcjose0-debuginfo-0.6.1-150600.18.3.1
    * libcjose0-0.6.1-150600.18.3.1
    * cjose-debugsource-0.6.1-150600.18.3.1
    * libcjose-devel-0.6.1-150600.18.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-53938.html
  * https://www.suse.com/security/cve/CVE-2026-53939.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1279844
  * https://bugzilla.suse.com/show_bug.cgi?id=1279846

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.suse.com/pipermail/sle-security-updates/attachments/20260917/7699293d/attachment.htm>