net: ioam6: fix OOB and missing lock (Linux Linux)

CVE-2026-43083
CRITICAL 9.1

En bref

Source
NVD
EPSS
EPSS 0.60 % · centile 49 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net: ioam6: fix OOB and missing lock When trace->type.bit6 is set: if (trace->type.bit6) { ... queue = skb_get_tx_queue(dev, skb); qdisc = rcu_dereference(queue->qdisc); This code can lead to an out-of-bounds access of the dev->_tx[] array when is_input is true. In such a case, the packet is on the RX path and skb->queue_mapping contains the RX queue index of the ingress device. If the ingress device has more RX queues than the egress device (dev) has TX queues, skb_get_queue_mapping(skb) will exceed dev->num_tx_queues. Add a check to avoid this situation since skb_get_tx_queue() does not clamp the index. This issue has also revealed that per queue visibility cannot be accurate and will be replaced later as a new feature. While at it, add missing lock around qdisc_qstats_qlen_backlog(). The function __ioam6_fill_trace_data() is called from both softirq and process contexts, hence the use of spin_lock_bh() here.

Faiblesses (CWE)

  • CWE-125 — Lecture hors limites

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < d8fa972c543e6a41f9a0873a725fd1d8d4d9dbfc ; affected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < a05a85779c2574b6534abb8cdc6d65fbc2e91208 ; affected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < f1af9d19503b73011dae5051c354fd39b03e240d ; affected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < 6d1d9ed9b409e0662241e3d245d574a18f643494 ; affected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < 95a1334748c95dd15546056280ade0c4b8dd7b78 ; affected b63c5478e9cb1d1504eb02d9dac827ad24612b32 < b30b1675aa2bcf0491fd3830b051df4e08a7c8ca
Linux · Linuxaffected 5.17 ; unaffected 0 < 5.17 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.24 ≤ 6.18.*

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