nfc: llcp: add missing return after LLCP_CLOSED checks (Linux Linux)

CVE-2026-31629
HIGH 8.8

En bref

Source
NVD
EPSS
EPSS 0.25 % · centile 17 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCP_CLOSED checks In nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket state is LLCP_CLOSED, the code correctly calls release_sock() and nfc_llcp_sock_put() but fails to return. Execution falls through to the remainder of the function, which calls release_sock() and nfc_llcp_sock_put() again. This results in a double release_sock() and a refcount underflow via double nfc_llcp_sock_put(), leading to a use-after-free. Add the missing return statements after the LLCP_CLOSED branches in both functions to prevent the fall-through.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/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 d646960f7986fefb460a2b062d5ccc8ccfeacc3a < b2a23529593d011fb433a3d711fc597ed6a6bd2f ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 665315df9c3486cb213fc44d83cc8bcd47fe0d26 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 0eb1263a3b8c36418c9ba295c9ab3abed664edbf ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 796e0cac058252d0ad34ebe288e6f7979b5fc9b2 ; affected d646960f7986fefb460a2b062d5ccc8ccfeacc3a < 8977fad2b3c6eefd414131168d597c5d1d5e1abf
Linux · Linuxaffected 3.3 ; unaffected 0 < 3.3 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.136 ≤ 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