CVE-2025-38477

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: Fix race condition on qfq_aggregate A race condition can occur when 'agg' is modified in qfq_change_agg (called during qfq_enqueue) while other threads access it concurrently. For example, qfq_dump_class may trigger a NULL dereference, and qfq_delete_class may cause a use-after-free. This patch addresses the issue by: 1. Moved qfq_destroy_class into the critical section. 2. Added sch_tree_lock protection to qfq_dump_class and qfq_dump_class_stats.

The following products are affected by CVE-2025-38477 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-38477.

URL	Resource
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
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
https://lore.kernel.org/linux-cve-announce/2025072813-CVE-2025-38477-8b42@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-38477
https://www.cve.org/CVERecord?id=CVE-2025-38477