High [CVE-2026-46323] Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs
This high-severity Red Hat Linux advisory covers CVE-2026-46323 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support.
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Summary
Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs. Red Hat rates this important (CVSS 7.8).
Weakness: CWE-123. Affected package(s): kernel.
Resolved in Red Hat advisory RHSA-2026:27708 — 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 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux for NVIDIA 26; and 5 more.
- kernel-0:5.14.0-570.123.1.el9_6
- kernel-0:6.12.0-55.82.1.el10_0
- kernel-0:5.14.0-427.132.1.el9_4
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:27708
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:27708 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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