SUSE-SU-2026:24597-1: important: Security update for python-Brotli

[SLE-SECURITY-UPDATES]

# Security update for python-Brotli

Announcement ID: SUSE-SU-2026:24597-1  
Release Date: 2026-10-29T14:55:24Z  
Rating: important  
References:

  * bsc#1252945
  * bsc#1287779

  
Cross-References:

  * CVE-2025-6176
  * CVE-2026-111497

  
CVSS scores:

  * CVE-2025-6176 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-6176 ( NVD ):  7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-111497 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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-2026-111497 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-111497 ( NVD ):  9.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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-2026-111497 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for python-Brotli fixes the following issues:

  * CVE-2025-6176: denial of service (DoS) due to a flaw in its brotli
    decompression (bsc#1252945).
  * CVE-2026-111497: Brotli decoder out-of-bounds write permits remote code
    execution (bsc#1287779).

Update to 1.2.1:

  * **decoder / encoder: added static initialization to reduce binary size**
  * python: allow limiting decoder output (see SECURITY section)
  * python: modernize extension / allow multi-phase module initialization
  * decoder / encoder: static tables use "small" model (allows 2GiB+ binaries)

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-2002

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-2002

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * python313-Brotli-1.2.1-160000.1.1
    * python313-Brotli-debuginfo-1.2.1-160000.1.1
    * python-Brotli-debugsource-1.2.1-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * python313-Brotli-1.2.1-160000.1.1
    * python313-Brotli-debuginfo-1.2.1-160000.1.1
    * python-Brotli-debugsource-1.2.1-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-6176.html
  * https://www.suse.com/security/cve/CVE-2026-111497.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1252945
  * https://bugzilla.suse.com/show_bug.cgi?id=1287779

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