CVE-2026-23313
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/03/2026
Last modified:
27/04/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
i40e: Fix preempt count leak in napi poll tracepoint<br />
<br />
Using get_cpu() in the tracepoint assignment causes an obvious preempt<br />
count leak because nothing invokes put_cpu() to undo it:<br />
<br />
softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101?<br />
<br />
This clearly has seen a lot of testing in the last 3+ years...<br />
<br />
Use smp_processor_id() instead.
Impact
References to Advisories, Solutions, and Tools
- 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



