ipv6: fix possible infinite loop in rt6_fill_node() (Linux Linux)

CVE-2026-63969
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Source
NVD
EPSS
EPSS 0.21 % · centile 11 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Undergoing Analysis

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6_fill_node() Sashiko reported this issue [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&rt->fib6_siblings) without waiting for RCU readers; rt->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &rt->fib6_siblings, causing a CPU stall. fib6_del_route() always WRITE_ONCE()s rt->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2 < b014a63d2f2c2c767762b548381882dfb1655529 ; affected 52da02521ede55fb86546c3fffd9377b3261b91f < 279853aec9f58d5cd723e6e5617c1c3337b30383 ; affected 34a949e7a0869dfa31a40416d2a56973fae1807b < c65b1f60237daac7c56c2652e064cc566a45dc81 ; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b < dc36a04621dcc2447dae428709207810b6c06e14 ; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b < 5e40de719ee76b8d96e2556ce36dbd3bd07bf37d ; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b < 9f72412bcf60144f252b0d6205106abf14344abc
Linux · Linuxaffected 6.13 ; unaffected 0 < 6.13 ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.* ; unaffected 6.12.93 ≤ 6.12.* ; unaffected 6.18.35 ≤ 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