Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-80597.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-80597
Upstream
Published
2026-03-25T11:16:27Z
Modified
2026-08-28T17:46:33.274873641Z
Summary
CVE-2026-23313 affecting package kernel for versions less than 6.6.137.1-1
Details

In the Linux kernel, the following vulnerability has been resolved:

i40e: Fix preempt count leak in napi poll tracepoint

Using getcpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes putcpu() to undo it:

softirq: huh, entered softirq 3 NETRX with preemptcount 00000100, exited with 00000101?

This clearly has seen a lot of testing in the last 3+ years...

Use smpprocessorid() instead.

References

Affected packages

Azure Linux:3 / kernel

Package

Name
kernel
Purl
pkg:rpm/azure-linux/kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.6.137.1-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-80597.json"