i40e: Fix preempt count leak in napi poll tracepoint

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Summary

CVECVE-2026-23313
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-25 11:16:27 UTC
Updated2026-04-27 14:16:30 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: i40e: Fix preempt count leak in napi poll tracepoint Using get_cpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes put_cpu() to undo it: softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101? This clearly has seen a lot of testing in the last 3+ years... Use smp_processor_id() instead.

Risk And Classification

EPSS: 0.000250000 probability, percentile 0.070520000 (date 2026-04-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 6d4d584a7ea8fc8d2be77545cb503118c193738a fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7 git Not specified
CNA Linux Linux affected 6d4d584a7ea8fc8d2be77545cb503118c193738a b7e91827e1cf89cd34ad11dc8f8c010b70ab786e git Not specified
CNA Linux Linux affected 6d4d584a7ea8fc8d2be77545cb503118c193738a 9e0f091821571f0da387462803ee42f0bb157582 git Not specified
CNA Linux Linux affected 6d4d584a7ea8fc8d2be77545cb503118c193738a dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f git Not specified
CNA Linux Linux affected 6d4d584a7ea8fc8d2be77545cb503118c193738a 4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9 git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.136 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.77 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.17 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.7 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9e0f091821571f0da387462803ee42f0bb157582 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b7e91827e1cf89cd34ad11dc8f8c010b70ab786e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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