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High7.0Red Hat Linux

High [CVE-2026-43503] propagate shared-frag marker through frag-transfer helpers

This high-severity Red Hat Linux advisory covers CVE-2026-43503 affecting NVIDIA for RHEL 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.

CVE-2026-43503 Published May 23, 2026
CVE-2026-43503
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

propagate shared-frag marker through frag-transfer helpers. Red Hat rates this important (CVSS 7).

Weakness: CWE-664. Affected package(s): rhcos, kernel-rt, kernel, kpatch-patch.

Resolved in Red Hat advisory RHSA-2026:23470 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: NVIDIA for RHEL 10; 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; and 17 more.

Affected versions
  • rhcos-412.86.202605271418-0
  • kernel-rt-0:5.14.0-70.180.1.rt21.252.el9_0
  • kernel-0:5.14.0-687.10.1.el9_8
  • kernel-0:5.14.0-570.116.1.el9_6
  • rhcos-4.21.9.6.202606030721-0
  • rhcos-4.19.9.6.202606031700-0
  • kernel-0:6.12.0-211.8.el10nv
  • kernel-rt-0:5.14.0-284.172.1.rt14.457.el9_2
  • kernel-0:4.18.0-477.143.1.el8_8
  • kernel-0:6.12.0-231.12.el10nv
  • kernel-0:5.14.0-70.180.1.el9_0
  • kernel-0:5.14.0-284.172.1.el9_2

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

Fixed versions
  • RHSA-2026:23470

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-2026:23470 (`sudo dnf update` / `yum update`).

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

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