Bluetooth: ISO: fix UAF in iso_recv_frame (Linux Linux)

CVE-2026-63946
HIGH 8.8

En bref

Source
NVD
EPSS
EPSS 0.26 % · centile 18 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix UAF in iso_recv_frame iso_recv_frame reads conn->sk under iso_conn_lock but releases the lock before using sk, with no reference held. A concurrent iso_sock_kill() can free sk in that window, causing use-after-free on sk->sk_state and sock_queue_rcv_skb(). Fix by replacing the bare pointer read with iso_sock_hold(conn), which calls sock_hold() while the spinlock is held, atomically elevating the refcount before the lock drops. Add a drop_put label so sock_put() is called on all exit paths where the hold succeeded.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération
  • CWE-362 — Situation de compétition

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 ccf74f2390d60a2f9a75ef496d2564abb478f46a < c57ea90f203c8b8b41a474f19a09000d0f841436 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 119fb6f80c44dc1c65d604cf28e64c56bd9b6568 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < b04ec131325baf4ea4577d6c6e6b86cf092e3731 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < c318aa51830a3d2cc1229968fe521441c97356cd ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 1a6b803b00ccdd7666506adbe01ddae1c72d1ca9 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 47f23a259517abbdb8032c057a1e8a6bf3734878
Linux · Linuxaffected 6.0 ; unaffected 0 < 6.0 ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.* ; unaffected 6.12.93 ≤ 6.12.* ; unaffected 6.18.35 ≤ 6.18.*

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