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

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Summary

CVECVE-2026-46249
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-03 18:16:25 UTC
Updated2026-06-03 18:16:25 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a b7605b9301abc18fbbf2b0e23fdd281fc768955d git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 9769a09afda20a006b528b9e723effcae45965b2 git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 57821d1436ba1c6a6973aa32d54166fdec35558c git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 8b5ed7c5417b7013d35b6f2507dab739013ba1a9 git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 7d56ba306e93d04696718963fb4cda2883ee7585 git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 9c3398e5b3a914b74276d44ab54c49123b89c61a git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 1370736836a18b5e0cd74bcc9cffe11d21f1fe79 git Not specified
CNA Linux Linux affected 54494aa5d1e68945dc79feb7c8461cd382e11d8a 2d2d574309e3ae84ee794869a5da8b4c38753a94 git Not specified
CNA Linux Linux affected 4.20 Not specified
CNA Linux Linux unaffected 4.20 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/57821d1436ba1c6a6973aa32d54166fdec35558c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1370736836a18b5e0cd74bcc9cffe11d21f1fe79 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b7605b9301abc18fbbf2b0e23fdd281fc768955d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8b5ed7c5417b7013d35b6f2507dab739013ba1a9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2d2d574309e3ae84ee794869a5da8b4c38753a94 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9c3398e5b3a914b74276d44ab54c49123b89c61a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9769a09afda20a006b528b9e723effcae45965b2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7d56ba306e93d04696718963fb4cda2883ee7585 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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