What is CVE-2026-46249?

CVE-2026-46249 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, 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 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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

Medium

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 2026-07-22

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

8 total

Kernel Git
https://git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79

Patch
Kernel Git
https://git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94

Patch
Kernel Git
https://git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c

Patch
Kernel Git
https://git.kernel.org/stable/c/7d56ba306e93d04696718963fb4cda2883ee7585

Patch
Kernel Git
https://git.kernel.org/stable/c/8b5ed7c5417b7013d35b6f2507dab739013ba1a9

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46249

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-03

Modified 2026-07-22

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46249?

CVE-2026-46249 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . 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.
What is the CVSS score for CVE-2026-46249?

CVE-2026-46249 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
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.