Medium [CVE-2026-43163] fix GPF in write_page caused by resize race
This medium-severity Red Hat Linux advisory covers CVE-2026-43163 affecting Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1.
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Summary
fix GPF in write_page caused by resize race. Red Hat rates this moderate (CVSS 4.7).
Weakness: CWE-825. Affected package(s): kernel, kernel-rt.
Resolved in Red Hat advisory RHSA-2026:21745 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 7.
- kernel-0:4.18.0-305.194.1.el8_4
- kernel-0:4.18.0-553.126.1.el8_10
- kernel-0:5.14.0-427.127.1.el9_4
- kernel-0:6.12.0-55.76.1.el10_0
- kernel-0:3.10.0-1160.151.1.el7
- kernel-0:4.18.0-477.147.1.el8_8
- kernel-rt-0:5.14.0-284.174.1.rt14.459.el9_2
- kernel-rt-0:4.18.0-553.126.1.rt7.467.el8_10
- kernel-0:5.14.0-687.10.1.el9_8
- kernel-0:5.14.0-284.174.1.el9_2
- kernel-0:5.14.0-570.119.1.el9_6
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:21745
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-2026:21745 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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