AZL-69027
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-69027.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-69027
- Upstream
- Published
- 2025-10-29T14:15:54Z
- Modified
- 2026-04-01T05:21:31.807930Z
- Summary
- CVE-2025-40083 affecting package kernel for versions less than 6.6.117.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net/sched: schqfq: Fix null-deref in aggdequeue
To prevent a potential crash in aggdequeue (net/sched/schqfq.c) when cl->qdisc->ops->peek(cl->qdisc) returns NULL, we check the return value before using it, similar to the existing approach in sch_hfsc.c.
To avoid code duplication, the following changes are made:
Changed qdiscwarnnonwc(include/net/pkt_sched.h) into a static inline function.
Moved qdiscpeeklen from net/sched/schhfsc.c to include/net/pktsched.h so that sch_qfq can reuse it.
Applied qdiscpeeklen in agg_dequeue to avoid crashing.
- References