i40e: Fix preempt count leak in napi poll tracepoint
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9
- https://git.kernel.org/stable/c/9e0f091821571f0da387462803ee42f0bb157582
- https://git.kernel.org/stable/c/b7e91827e1cf89cd34ad11dc8f8c010b70ab786e
- https://git.kernel.org/stable/c/dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f
- https://git.kernel.org/stable/c/fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23313.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-23313