CVE-2026-23313
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 6d4d584a7ea8fc8d2be77545cb503118c193738a < fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7 | affected |
| Linux | Linux | 6d4d584a7ea8fc8d2be77545cb503118c193738a < b7e91827e1cf89cd34ad11dc8f8c010b70ab786e | affected |
| Linux | Linux | 6d4d584a7ea8fc8d2be77545cb503118c193738a < 9e0f091821571f0da387462803ee42f0bb157582 | affected |
| Linux | Linux | 6d4d584a7ea8fc8d2be77545cb503118c193738a < dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f | affected |
| Linux | Linux | 6d4d584a7ea8fc8d2be77545cb503118c193738a < 4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9 | affected |
| Linux | Linux | 6.2 | affected |
| Linux | Linux | 0 < 6.2 | unaffected |
| Linux | Linux | 6.6.136 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.77 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.17 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.7 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7
- https://git.kernel.org/stable/c/b7e91827e1cf89cd34ad11dc8f8c010b70ab786e
- https://git.kernel.org/stable/c/9e0f091821571f0da387462803ee42f0bb157582
- https://git.kernel.org/stable/c/dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f
- https://git.kernel.org/stable/c/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.