CVE-2026-68141

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()

HIGH 7.5

En bref

Source
NVD
EPSS
EPSS 0.52 % · centile 44 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

Description

In the Linux kernel, the following vulnerability has been resolved: net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC. If the allocation fails, nsk is NULL. The connection-refused path is entered when the listen state check fails, the accept backlog is full, or nsk is NULL. The code unconditionally calls iucv_sock_kill(nsk) in that path. iucv_sock_kill() does not accept a NULL socket pointer and immediately dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL, calling iucv_sock_kill(nsk) results in a NULL pointer dereference. Only call iucv_sock_kill() when a child socket was successfully allocated.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HLinux
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 3881ac441f642d56503818123446f7298442236b < 6a1eb5b46c19073f8153b7e2c19b408cf353aaf1 ; affected 3881ac441f642d56503818123446f7298442236b < c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953 ; affected 3881ac441f642d56503818123446f7298442236b < 07e21deb3664001995e0a456dd627ab7dbe127ec ; affected 3881ac441f642d56503818123446f7298442236b < 8bb111f87ded6acb9837ec9b45d6f02cda94c51f ; affected 3881ac441f642d56503818123446f7298442236b < 46453b16f38ec7147351f7447e2aec6ea330f7b3 ; affected 3881ac441f642d56503818123446f7298442236b < 33736ff5e7c97d3348ce812e8bd2e125d840743c
Linux · Linuxaffected 3.2 ; unaffected 0 < 3.2 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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