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High8.1Red Hat Linux

High [CVE-2026-6100] Arbitrary code execution or information disclosure via use-after-free in decompression modules

This high-severity Red Hat Linux advisory covers CVE-2026-6100 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

CVE-2026-6100 Published Apr 13, 2026
CVE-2026-6100
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Arbitrary code execution or information disclosure via use-after-free in decompression modules. Red Hat rates this important (CVSS 8.1).

Weakness: CWE-825. Affected package(s): python3.11, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, rhpam, python3.9, python3.12.

Resolved in Red Hat advisory RHSA-2026:26187 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 16 more.

Affected versions
  • python3.11-0:3.11.11-2.el9_6.7
  • rhaiis/model-opt-cuda-rhel9:1782352950
  • rhaiis/vllm-spyre-rhel9:1782352919
  • rhpam-7/rhpam-kieserver-rhel8:7.13.5-4.1777325709
  • python3.9-0:3.9.10-4.el9_0.11
  • python3.12-0:3.12.1-4.el9_4.13
  • rhpam-7/rhpam-smartrouter-rhel8:7.13.5-4.1777325708
  • rhelai3/bootc-aws-cuda-rhel9:1776871984
  • python3.12-0:3.12.9-1.el9_6.8
  • rhelai3/bootc-rocm-rhel9:1776773505
  • rhelai3/bootc-azure-rocm-rhel9:1776872005
  • rhpam-7/rhpam-businesscentral-rhel8:7.13.5-4.1777325711

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:26187

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:26187 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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