net/iucv: fix locking in .getsockopt (Linux Linux)

CVE-2026-64004
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.10 % · centile 1 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucv_sock_setsockopt() and wrap the whole switch in lock_sock()/release_sock(). The pre-existing SO_MSGLIMIT-only lock becomes redundant and is removed. Any AF_IUCV HIPER user can potentially crash the kernel by racing recvmsg() with getsockopt(SO_MSGSIZE): the SO_MSGSIZE arm dereferences iucv->hs_dev->mtu after iucv_sock_close() (called from the racing recvmsg()) has set hs_dev to NULL, producing a NULL pointer dereference oops.

Faiblesses (CWE)

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)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 51363b8751a673a00ad48eea895266396d53fa52 < 884eb247b74d86db97e3a37f0d6fc8e1e83590dd ; affected 51363b8751a673a00ad48eea895266396d53fa52 < 45bb8de8c95d8899f4b8f61bd9bceb8132af73cb ; affected 51363b8751a673a00ad48eea895266396d53fa52 < 1fc30bd4e55e2dd622d2d366cecd732c1841bbee ; affected 51363b8751a673a00ad48eea895266396d53fa52 < cd691beafea0dd779e69e81ccc26b0ab50efcb5e ; affected 51363b8751a673a00ad48eea895266396d53fa52 < 6e792b8dd3002bbc4136745928a9605df1a72b8a ; affected 51363b8751a673a00ad48eea895266396d53fa52 < 9817369243380e287ebe5525411557eaa3aa2a79
Linux · Linuxaffected 3.4 ; unaffected 0 < 3.4 ; 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