macvlan: fix possible UAF in macvlan_forward_source() (Linux Linux)

CVE-2026-23001
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 11 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointer before RCU grace period starts. This allows macvlan_forward_source() to skip over entries queued for freeing. Note that macvlan_dev are already RCU protected, as they are embedded in a standard netdev (netdev_priv(ndev)). https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 8133e85b8a3ec9f10d861e0002ec6037256e987e ; affected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 484919832e2db6ce1e8add92c469e5d459a516b5 ; affected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 232afc74a6dde0fe1830988e5827921f5ec9bb3f ; affected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 15f6faf36e162532bec5cc05eb3fc622108bf2ed ; affected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 8518712a2ca952d6da2238c6f0a16b4ae5ea3f13 ; affected 79cf79abce71eb7dbc40e2f3121048ca5405cb47 < 6dbead9c7677186f22b7981dd085a0feec1f038e
Linux · Linuxaffected 3.18 ; unaffected 0 < 3.18 ; unaffected 5.10.249 ≤ 5.10.* ; unaffected 5.15.199 ≤ 5.15.* ; unaffected 6.1.162 ≤ 6.1.* ; unaffected 6.6.122 ≤ 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