net/sched: sch_qfq: Fix null-deref in agg_dequeue (Linux Linux)

CVE-2025-40083
Non disponible

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 10 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: Fix null-deref in agg_dequeue To prevent a potential crash in agg_dequeue (net/sched/sch_qfq.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: 1. Changed qdisc_warn_nonwc(include/net/pkt_sched.h) into a static inline function. 2. Moved qdisc_peek_len from net/sched/sch_hfsc.c to include/net/pkt_sched.h so that sch_qfq can reuse it. 3. Applied qdisc_peek_len in agg_dequeue to avoid crashing.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 462dbc9101acd38e92eda93c0726857517a24bbd < 71d84658a61322e5630c85c5388fc25e4a2d08b2 ; affected 462dbc9101acd38e92eda93c0726857517a24bbd < 99fc137f178797204d36ac860dd8b31e35baa2df ; affected 462dbc9101acd38e92eda93c0726857517a24bbd < 1bed56f089f09b465420bf23bb32985c305cfc28 ; affected 462dbc9101acd38e92eda93c0726857517a24bbd < 3c2a8994807623c7655ece205667ae2cf74940aa ; affected 462dbc9101acd38e92eda93c0726857517a24bbd < 6ffa9d66187188e3068b5a3895e6ae1ee34f9199 ; affected 462dbc9101acd38e92eda93c0726857517a24bbd < 6ff8e74c8f8a68ec07ef837b95425dfe900d060f
Linux · Linuxaffected 3.8 ; unaffected 0 < 3.8 ; unaffected 5.4.302 ≤ 5.4.* ; unaffected 5.10.247 ≤ 5.10.* ; unaffected 5.15.197 ≤ 5.15.* ; unaffected 6.1.159 ≤ 6.1.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD