Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/11bccb054c1462fb069219f8e98e97a5a730758e Patch
- git.kernel.org/stable/c/2f46d14919c39528c6e540ebc43f90055993eedc Patch
- git.kernel.org/stable/c/68f256305ceb426d545a0dc31f83c2ab1d211a1e Patch
- git.kernel.org/stable/c/6ccbda44e2cc3d26fd22af54c650d6d5d801addf Patch
- git.kernel.org/stable/c/76c4c22c2437d3d3880efc0f62eca06ef078d290 Patch
- git.kernel.org/stable/c/c6936266f8bf98a53f28ef9a820e6a501e946d09 Patch
- git.kernel.org/stable/c/c6f035044104c6ff656f4565cd22938dc892528c Patch
- git.kernel.org/stable/c/da7936518996d290e2fcfcaf6cd7e15bfd87804a Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 14 · as of 7 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.