What is CVE-2026-46249?

CVE-2026-46249 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.20 onward and patched in 5.10.252, 5.15.202, 6.1.165 and others. CVE-2026-46249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46249?

CVE-2026-46249 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-46249?

Yes, CVE-2026-46249 has been patched. Fixed versions include 5.10.252, 5.15.202, 6.1.165 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46249 actively exploited?

CVE-2026-46249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46249

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Fix PF driver crash with kexec kernel booting During a kexec reboot the hardware is not power-cycled, so AF state from the old kernel can persist into the new kernel. When AF and PF drivers are built as modules, the PF driver may probe before AF reinitializes the hardware. The PF driver treats the RVUM block revision as an indication that AF initialization is complete. If this value is left uncleared at shutdown, PF may incorrectly assume AF is ready and access stale hardware state, leading to a crash. Clear the RVUM block revision during AF shutdown to avoid PF mis-detecting AF readiness after kexec.

Package Linux Kernel

Published 2026-06-03

Last modified 2026-06-05

Patch available

Yes

Affected versions

Linux kernel versions 4.20 and later are affected. Fixed in 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 and their respective stable series.

Affected from

≥ 4.20

Fixed in

✓ 5.10.252 5.10.x ✓ 5.15.202 5.15.x ✓ 6.1.165 6.1.x ✓ 6.6.128 6.6.x ✓ 6.12.75 6.12.x ✓ 6.18.14 6.18.x ✓ 6.19.4 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-46249 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94
Patch
Kernel patch commit
https://git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c
Patch

8 patch commits total View all on NVD

Frequently asked questions

What is CVE-2026-46249?

CVE-2026-46249 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.20 onward and has been patched in 5.10.252, 5.15.202, 6.1.165 and others. CVE-2026-46249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-46249?

Yes — CVE-2026-46249 has been patched. Fixed versions include 5.10.252, 5.15.202, 6.1.165 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46249 actively exploited?

No — CVE-2026-46249 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.