High [CVE-2025-71085] BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()
This high-severity Red Hat Linux advisory covers CVE-2025-71085 affecting Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
BUG() in pskb_expand_head() as part of calipso_skbuff_setattr(). Red Hat rates this moderate (CVSS 7.5).
Weakness: CWE-190. Affected package(s): kernel, kernel-rt.
Resolved in Red Hat advisory RHSA-2026:5727 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
- kernel-0:6.12.0-55.65.1.el10_0
- kernel-rt-0:4.18.0-553.111.1.rt7.452.el8_10
- kernel-0:4.18.0-553.111.1.el8_10
- kernel-0:5.14.0-427.114.1.el9_4
- kernel-0:5.14.0-570.98.1.el9_6
- kernel-0:6.12.0-124.43.1.el10_1
- kernel-0:4.18.0-305.188.1.el8_4
- kernel-0:4.18.0-193.190.1.el8_2
- kernel-0:4.18.0-477.133.1.el8_8
- kernel-rt-0:5.14.0-70.171.1.rt21.243.el9_0
- kernel-0:5.14.0-284.161.1.el9_2
- kernel-0:4.18.0-372.185.1.el8_6
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:5727
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-2026:5727 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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