CVE-2025-38477
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-38477
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38477.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-38477
- Downstream
- Related
- Published
- 2025-07-28T12:15:29Z
- Modified
- 2025-08-30T18:01:35Z
- Summary
- [none]
- 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:
Moved qfqdestroyclass into the critical section.
Added schtreelock protection to qfqdumpclass and qfqdumpclass_stats.
- References
-
- https://git.kernel.org/stable/c/466e10194ab81caa2ee6a332d33ba16bcceeeba6
- https://git.kernel.org/stable/c/5e28d5a3f774f118896aec17a3a20a9c5c9dfc64
- https://git.kernel.org/stable/c/a6d735100f602c830c16d69fb6d780eebd8c9ae1
- https://git.kernel.org/stable/c/aa7a22c4d678bf649fd3a1d27debec583563414d
- https://git.kernel.org/stable/c/c000a3a330d97f6c073ace5aa5faf94b9adb4b79
- https://git.kernel.org/stable/c/c6df794000147a3a02f79984aada4ce83f8d0a1e
- https://git.kernel.org/stable/c/d841aa5518508ab195b6781ad0d73ee378d713dd
- https://git.kernel.org/stable/c/fbe48f06e64134dfeafa89ad23387f66ebca3527