Riskcovery

CVE-2026-23313

i40e: Fix preempt count leak in napi poll tracepoint

State
Published
Severity
Not scored
Published
Mar 25, 2026
Updated
May 11, 2026
Reserved
Jan 13, 2026

Read the record on cve.org

Description

In 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 6d4d584a7ea8fc8d2be77545cb503118c193738a to before fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7Affected
  • 6d4d584a7ea8fc8d2be77545cb503118c193738a to before b7e91827e1cf89cd34ad11dc8f8c010b70ab786eAffected
  • 6d4d584a7ea8fc8d2be77545cb503118c193738a to before 9e0f091821571f0da387462803ee42f0bb157582Affected
  • 6d4d584a7ea8fc8d2be77545cb503118c193738a to before dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561fAffected
  • 6d4d584a7ea8fc8d2be77545cb503118c193738a to before 4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9Affected
LinuxLinux
  • 6.2Affected
  • before 6.2Not affected
  • 6.6.136 through 6.6.*Not affected
  • 6.12.77 through 6.12.*Not affected
  • 6.18.17 through 6.18.*Not affected
  • 6.19.7 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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