--- cve: "CVE-2026-64408" severity: "HIGH" cvss: 8.8 epss: "26%" vendor: "Linux" kev: false exploited: false published: "2026-07-25 10:17:24" tags: [cve, security, high] source: tsecurity.de CVE-Dossier exported: "2026-09-06T19:23:44+02:00" --- # CVE-2026-64408 > 8.8 HIGH ## Beschreibung In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference. ## CVSS-Vektor ``` CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ``` | Metrik | Wert | Bewertung | |---|---|---| | AV Angriffsvektor | Benachbart | warn | | AC Komplexität | Gering | bad | | PR Privilegien | Keine | bad | | UI Interaktion | Keine | bad | | S Scope | Unverändert | good | | C Vertraulichkeit | Hoch | bad | | I Integrität | Hoch | bad | | A Verfügbarkeit | Hoch | bad | ## Patch verfügbar (OSV) - Kernel ≥ 5.10.261 - Kernel ≥ 5.15.212 - Kernel ≥ 6.1.178 - Kernel ≥ 6.6.145 - Kernel ≥ 6.12.96 - Kernel ≥ 6.18.39 - Kernel ≥ 7.1.4 ## Referenzen - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64408) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_