Medium 5.5Published Jun 3, 2026

CVE-2026-46249octeontx2-af: Fix PF driver crash with kexec kernel booting

Updated under an hour ago (Oct 26, 2026, 8:00 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 54494aa5d1e68945dc79feb7c8461cd382e11d8a before b7605b9301abc18fbbf2b0e23fdd281fc768955d; 54494aa5d1e68945dc79feb7c8461cd382e11d8a builds before 9769a09afda20a006b528b9e723effcae45965b2; from 54494aa5d1e68945dc79feb7c8461cd382e11d8a before 57821d1436ba1c6a6973aa32d54166fdec35558c; 54494aa5d1e68945dc79feb7c8461cd382e11d8a builds before 8b5ed7c5417b7013d35b6f2507dab739013ba1a9; 54494aa5d1e68945dc79feb7c8461cd382e11d8a builds before 7d56ba306e93d04696718963fb4cda2883ee7585; 54494aa5d1e68945dc79feb7c8461cd382e11d8a builds before 9c3398e5b3a914b74276d44ab54c49123b89c61a; from 54494aa5d1e68945dc79feb7c8461cd382e11d8a before 1370736836a18b5e0cd74bcc9cffe11d21f1fe79; 54494aa5d1e68945dc79feb7c8461cd382e11d8a builds before 2d2d574309e3ae84ee794869a5da8b4c38753a94	CNA record
linux linux_kernel linux:linux_kernel	from 4.20 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; from 6.19 before 6.19.4	NVD

References

References

https://git.kernel.org/stable/c/b7605b9301abc18fbbf2b0e23fdd281fc768955d	patch
https://git.kernel.org/stable/c/9769a09afda20a006b528b9e723effcae45965b2	patch
https://git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c	patch
https://git.kernel.org/stable/c/8b5ed7c5417b7013d35b6f2507dab739013ba1a9	patch
https://git.kernel.org/stable/c/7d56ba306e93d04696718963fb4cda2883ee7585	patch
https://git.kernel.org/stable/c/9c3398e5b3a914b74276d44ab54c49123b89c61a	patch
https://git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79	patch
https://git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.