High7.8Red Hat & Ubuntu Linux
"Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel
CVE-2026-43284 Published May 7, 2026
CVE-2026-43284
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
"Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel. Red Hat rates this important (CVSS 7.8). Weakness: CWE-123. Affected package(s): rhcos, kernel, kernel-rt, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:26542 — update the affected packages (`sudo dnf update`).
Affected versions
- rhcos-412.86.202605111404-0
- rhcos-412.86.202605271418-0
- rhcos-416.94.202605101426-0
- kernel-0:4.18.0-372.192.1.el8_6
- kernel-0:5.14.0-687.10.1.el9_8
- kernel-rt-0:5.14.0-70.179.1.rt21.251.el9_0
- kernel-0:5.14.0-611.55.1.el9_7
- kernel-0:4.18.0-477.140.1.el8_8
- kernel-0:6.12.0-55.73.1.el10_0
- rhcos-414.92.202605111427-0
- kernel-0:6.12.0-211.7.3.el10_2
- kernel-0:6.12.0-211.7.el10nv
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
- RHSA-2026:26542
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:26542 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.