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CVE-2026-80762

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : 7.2.1, <=6.1.*, 7.1.11, <=6.12.*, <29c59212a507804d7616b8abf491d30b4ab8e75f, 6.6.156, <87ad116ac3abc6f2ce2b5b6c488f633003581eee, 0, <95bb57bc11a91caf042ad00fca85e480d3fda37f, 182ee45da083db4e3e621541ccf255bfa9652214, <=7.1.*, <f57b399c4fa1501b2d5451f52d861ece86bcf3db, <5.17, <=6.6.*, <b5181516a9f5c2fdb3271cdad72a5b16c6963a44, <=6.18.*, 6.18.47, <=7.2.*, <bb5f5414d1a6272a16f68684e998f4063dd19f57, <=*, 6.12.108, <fe93a697a7a92fa9adf78c9ff67a10db3193290c, 5.17, 6.1.187, 7.3

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix accept list UAF during suspend hci_update_event_filter_sync() walks hdev->accept_list while sending a synchronous HCI command for each remote-wakeup device. The suspend path holds hdev->req_lock, but accept-list updates are serialized by hdev->lock. Consequently, remove_device() can free the current list entry during the controller wait. The following interleaving causes the use-after-free: hci_update_event_filter_sync() remove_device() fetch accept-list entry hci_set_event_filter_sync() wait for controller response hci_dev_lock() list_del() kfree() hci_dev_unlock() read the freed list.next KASAN reported: BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835/0x910 Read of size 8 at addr ffff88810bec8440 by task kworker/0:1/10 Workqueue: events vhci_suspend_work Call Trace: hci_suspend_sync+0x835/0x910 hci_suspend_dev+0x182/0x450 process_one_work+0x661/0x1090 worker_thread+0x45b/0xd10 Allocated by task 86: hci_bdaddr_list_add_with_flags+0x1a8/0x400 add_device+0x381/0x820 hci_sock_sendmsg+0x1033/0x1ea0 Freed by task 91: kfree+0x131/0x3c0 remove_device+0x429/0xb70 hci_sock_sendmsg+0x1033/0x1ea0 Snapshot the remote-wakeup addresses under hdev->lock. Release the lock before sending HCI commands. Clear the controller event filter before building the snapshot, and skip allocation and the second list traversal when there are no matching entries. This preserves the original filter and scan-state updates without retaining an accept-list node across a controller wait.

Gravité et risque d'exploitation

CVE-2026-80762 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.17 %, ce qui la place devant 6.3 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 7.2.1, <=6.1.*, 7.1.11, <=6.12.*, <29c59212a507804d7616b8abf491d30b4ab8e75f, 6.6.156, <87ad116ac3abc6f2ce2b5b6c488f633003581eee, 0, <95bb57bc11a91caf042ad00fca85e480d3fda37f, 182ee45da083db4e3e621541ccf255bfa9652214, <=7.1.*, <f57b399c4fa1501b2d5451f52d861ece86bcf3db, <5.17, <=6.6.*, <b5181516a9f5c2fdb3271cdad72a5b16c6963a44, <=6.18.*, 6.18.47, <=7.2.*, <bb5f5414d1a6272a16f68684e998f4063dd19f57, <=*, 6.12.108, <fe93a697a7a92fa9adf78c9ff67a10db3193290c, 5.17, 6.1.187, 7.3) 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.

Références

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