ipv6: exthdrs: refresh nh after handling HAO option (Linux Linux)

CVE-2026-63922
CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.71 % · centile 54 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6_parse_tlv() caches skb_network_header(skb) in nh while walking IPv6 TLVs. ipv6_dest_hao() may call pskb_expand_head() for a cloned skb, which can move the skb head and invalidate the cached network header pointer. Refresh nh after ipv6_dest_hao() returns so any trailing padding or TLVs are parsed from the current skb head. This matches the existing pattern used in ip6_parse_tlv() after helpers that can modify skb header storage.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected a831f5bbc89a9978795504be9e1ff412043f8f77 < b3ac54e5c905f86d22b502eacb5686a282c5659f ; affected a831f5bbc89a9978795504be9e1ff412043f8f77 < f8aabed3ff3e986920cf02a2a2785e08e586b234 ; affected a831f5bbc89a9978795504be9e1ff412043f8f77 < 1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1 ; affected a831f5bbc89a9978795504be9e1ff412043f8f77 < 12d957979e4a800167842f1b42be6a606d227ebe ; affected a831f5bbc89a9978795504be9e1ff412043f8f77 < ff375ed1cba81392346c5bfbf0bb7a13b2946f99 ; affected a831f5bbc89a9978795504be9e1ff412043f8f77 < 751db1b802a067b7fff25880f4e9f9152a171538
Linux · Linuxaffected 2.6.19 ; unaffected 0 < 2.6.19 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.*

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