High7.8Red Hat & Ubuntu Linux
fix heap overflow in NFSv4.0 LOCK replay cache
CVE-2026-31402 Published Apr 3, 2026
CVE-2026-31402
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
fix heap overflow in NFSv4.0 LOCK replay cache. Red Hat rates this important (CVSS 7.8). Weakness: CWE-787. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:13936 — update the affected packages (`sudo dnf update`).
Affected versions
- kernel-0:4.18.0-553.123.1.el8_10
- kernel-0:4.18.0-372.190.1.el8_6
- kernel-0:4.18.0-477.139.1.el8_8
- kernel-0:6.12.0-55.72.1.el10_0
- kernel-rt-0:5.14.0-70.178.1.rt21.250.el9_0
- kernel-rt-0:4.18.0-553.123.1.rt7.464.el8_10
- kernel-0:5.14.0-611.54.1.el9_7
- kernel-0:5.14.0-687.10.1.el9_8
- kernel-0:5.14.0-427.121.1.el9_4
- kernel-0:5.14.0-570.110.1.el9_6
- kernel-0:5.14.0-70.178.1.el9_0
- kernel-rt-0:3.10.0-1160.149.1.rt56.1301.el7
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- RHSA-2026:13936
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:13936 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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