Bluetooth: ISO: drop ISO_END frames received without prior ISO_START (Linux Linux)

CVE-2026-64128
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 2 ()
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: drop ISO_END frames received without prior ISO_START ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISO_CONT branch of iso_recv() guards against a missing ISO_START by checking conn->rx_len before touching conn->rx_skb, but ISO_END does not. If a peer sends an ISO_END as the first packet on a fresh ISO connection, conn->rx_skb is still NULL and conn->rx_len is zero, so skb_put(conn->rx_skb, ...) dereferences NULL and oopses. For BIS, where receivers sync to a broadcaster without pairing, any broadcaster on the air can trigger this. Mirror the ISO_CONT check at the top of ISO_END so a stray end fragment is logged and dropped instead of crashing the host.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 1c3d1e1696b72579b970e17999c503a14535205b ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 3af41ee7ebecb0d5c8a504861f6cfad31345310f ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 39f4a82e80c8f5ed2d6952d73fbafc895721a728 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 61f2410a96dee808029e2ae4d6ef2dd635f3477f ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < e3a799881c12d27596232636a607e2e3fa448d63 ; affected ccf74f2390d60a2f9a75ef496d2564abb478f46a < 84c24fb151fc1179355296d7ff29129ac7c42129
Linux · Linuxaffected 6.0 ; unaffected 0 < 6.0 ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.142 ≤ 6.6.* ; unaffected 6.12.92 ≤ 6.12.* ; unaffected 6.18.34 ≤ 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