CVE-2026-46249

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

State: Published
Severity: Not scored
Published: Jun 3, 2026
Updated: Jun 3, 2026
Reserved: May 13, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	54494aa5d1e68945dc79feb7c8461cd382e11d8a to before b7605b9301abc18fbbf2b0e23fdd281fc768955dAffected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 9769a09afda20a006b528b9e723effcae45965b2Affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 57821d1436ba1c6a6973aa32d54166fdec35558cAffected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 8b5ed7c5417b7013d35b6f2507dab739013ba1a9Affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 7d56ba306e93d04696718963fb4cda2883ee7585Affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 9c3398e5b3a914b74276d44ab54c49123b89c61aAffected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 1370736836a18b5e0cd74bcc9cffe11d21f1fe79Affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 2d2d574309e3ae84ee794869a5da8b4c38753a94Affected
LinuxLinux	4.20Affected before 4.20Not affected 5.10.252 through 5.10.Not affected 5.15.202 through 5.15.Not affected 6.1.165 through 6.1.Not affected 6.6.128 through 6.6.Not affected 6.12.75 through 6.12.Not affected 6.18.14 through 6.18.Not affected 6.19.4 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

54494aa5d1e68945dc79feb7c8461cd382e11d8a to before b7605b9301abc18fbbf2b0e23fdd281fc768955dAffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 9769a09afda20a006b528b9e723effcae45965b2Affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 57821d1436ba1c6a6973aa32d54166fdec35558cAffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 8b5ed7c5417b7013d35b6f2507dab739013ba1a9Affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 7d56ba306e93d04696718963fb4cda2883ee7585Affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 9c3398e5b3a914b74276d44ab54c49123b89c61aAffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 1370736836a18b5e0cd74bcc9cffe11d21f1fe79Affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a to before 2d2d574309e3ae84ee794869a5da8b4c38753a94Affected

LinuxLinux

4.20Affected
before 4.20Not affected
5.10.252 through 5.10.*Not affected
5.15.202 through 5.15.*Not affected
6.1.165 through 6.1.*Not affected
6.6.128 through 6.6.*Not affected
6.12.75 through 6.12.*Not affected
6.18.14 through 6.18.*Not affected
6.19.4 through 6.19.*Not affected
7.0 and laterNot affected

References

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