octeontx2-pf: fix SQB pointer leak on init failure

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Summary

CVECVE-2026-72023
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:21:01 UTC
Updated2026-08-17 06:17:59 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix SQB pointer leak on init failure otx2_init_hw_resources() initializes SQ aura and pool resources before several later setup steps. On failure, err_free_sq_ptrs only frees SQB pages, leaving the per-SQ sqb_ptrs arrays behind. Use otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs even when sq->sqe has not been allocated yet. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an OcteonTX2 PF device and the corresponding AF mailbox setup to test with, no runtime testing was able to be performed.

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.101660000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 148d7ec0a3a98839c320e6cdd112e2e88bfb091b git Not specified
CNA Linux Linux affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 5e023fe2569e630ba23b5558ebe4bf4837af4d16 git Not specified
CNA Linux Linux affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 5df30f05db96552903680a17f858d250dfd9e86e git Not specified
CNA Linux Linux affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 23d917acd9c9a9fd999688ec3fdde7aa58ab8a14 git Not specified
CNA Linux Linux affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 62e7df6d042aeebd5efb581074e28865c04477be git Not specified
CNA Linux Linux affected 5.6 Not specified
CNA Linux Linux unaffected 5.6 semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/62e7df6d042aeebd5efb581074e28865c04477be 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5e023fe2569e630ba23b5558ebe4bf4837af4d16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5df30f05db96552903680a17f858d250dfd9e86e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/23d917acd9c9a9fd999688ec3fdde7aa58ab8a14 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/148d7ec0a3a98839c320e6cdd112e2e88bfb091b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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