In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class handling This patch fixes a Use-After-Free vulnerability in the HFSC qdisc clas…
High CVSS 7.8
Summary
In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a UAF vulnerability in class handling This patch fixes a Use-After-Free vulnerability in the HFSC qdisc class handling. The issue occurs due to a time-of-check/time-of-use condition in hfsc_change_class() when working with certain child qdiscs like netem or codel. The vulnerability works as follows: 1. hfsc_change_class() checks if a class has packets (q.qlen != 0) 2. It then calls qdisc_peek_len(), whic…
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
- :
Sources
- NVD DATABASE
Original Links
- https://git.kernel.org/stable/c/20d584a33e480ae80d105f43e0e7b56784da41b9 Patch
- https://git.kernel.org/stable/c/28b09a067831f7317c3841812276022d6c940677 Patch
- https://git.kernel.org/stable/c/39b9095dd3b55d9b2743df038c32138efa34a9de Patch
- https://git.kernel.org/stable/c/3aa852e3605000d5c47035c3fc3a986d14ccfa9f Patch
- https://git.kernel.org/stable/c/3df275ef0a6ae181e8428a6589ef5d5231e58b5c Patch
- https://git.kernel.org/stable/c/86cd4641c713455a4f1c8e54c370c598c2b1cee0 Patch
- https://git.kernel.org/stable/c/bb583c88d23b72d8d16453d24856c99bd93dadf5 Patch
- https://git.kernel.org/stable/c/fcc8ede663569c704fb00a702973bd6c00373283 Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing List
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing List
Timeline
- nvd_ingest NVD