Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-65907.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-65907
Upstream
Published
2025-07-28T12:15:29Z
Modified
2026-04-01T05:20:40.077165Z
Summary
CVE-2025-38477 affecting package kernel for versions less than 6.6.104.2-1
Details

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

net/sched: schqfq: Fix race condition on qfqaggregate

A race condition can occur when 'agg' is modified in qfqchangeagg (called during qfqenqueue) while other threads access it concurrently. For example, qfqdumpclass may trigger a NULL dereference, and qfqdelete_class may cause a use-after-free.

This patch addresses the issue by:

  1. Moved qfqdestroyclass into the critical section.

  2. Added schtreelock protection to qfqdumpclass and qfqdumpclass_stats.

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
6.6.104.2-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-65907.json"