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CVE-2025-38477
MEDIUM4.7
Description
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.
CVE Details
CVSS v3.1 Score4.7
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorLOCAL
ComplexityHIGH
Privileges RequiredLOW
User InteractionNONE
Published7/28/2025
Last Modified12/23/2025
Sourcenvd
Honeypot Sightings0
Affected Products
debian:debian_linuxlinux:linux_kernel
Weaknesses (CWE)
CWE-362
References
https://git.kernel.org/stable/c/466e10194ab81caa2ee6a332d33ba16bcceeeba6(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/5e28d5a3f774f118896aec17a3a20a9c5c9dfc64(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/a6d735100f602c830c16d69fb6d780eebd8c9ae1(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/aa7a22c4d678bf649fd3a1d27debec583563414d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/c000a3a330d97f6c073ace5aa5faf94b9adb4b79(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/c6df794000147a3a02f79984aada4ce83f8d0a1e(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/d841aa5518508ab195b6781ad0d73ee378d713dd(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://git.kernel.org/stable/c/fbe48f06e64134dfeafa89ad23387f66ebca3527(416baaa9-dc9f-4396-8d5f-8c081fb06d67)
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html(af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html(af854a3a-2127-422b-91ae-364da2661108)
IOC Correlations
No correlations recorded
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