CVE-2026-98458
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: release unused CIS holds after channel attach hci_bind_cis() and hci_connect_cis() return one hci_conn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by iso_conn_free(). There are two cases where iso_chan_add() does not create an association: it returns success when the socket is already attached to the same iso_conn, and it returns -EBUSY when another socket is attached. The hold returned for the current call is unused in both cases. This occurs when deferred setup calls iso_connect_cis() again for its existing socket, or when another socket attempts to reuse the CIS. Detect the idempotent case while the connection is locked and release the unused hold after iso_chan_add(). Also release it on -EBUSY. Do not drop it for other errors: a newly allocated iso_conn releases the transferred hold when its last temporary reference is put.
Gravité et risque d'exploitation
CVE-2026-98458 obtient un score CVSS de 0.0/10, soit une gravité non évaluée.
Que faire ?
- Vérifiez si Linux (versions 6.6, <=*, <=6.12.*, 69997d50ec574be816b4ee8f9cee52ebbd53f8bd, <6.6, <=6.18.*, <e5fcca51177f224604e3a8c926ffd5edbeb58b09, 6.18.55, <ed4c026cc4094dfb7a329b9d8df0ddd0be1b2458, <e0e8b70207eaf27aee0a05ec5bf2d1b6bcb004d1, 0, 7.3, <=7.2.*, 7.2.9, <0fcd4dad555c96e0bd3a1b8c569f989be85c7341, 6.12.113) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.