CVE-2026-80762Bluetooth: hci_sync: Fix accept list UAF during suspend
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 45 days later
· 45 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < bb5f5414d1a6272a16f68684e998f4063dd19f57
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < b5181516a9f5c2fdb3271cdad72a5b16c6963a44
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < 87ad116ac3abc6f2ce2b5b6c488f633003581eee
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < fe93a697a7a92fa9adf78c9ff67a10db3193290c
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < 95bb57bc11a91caf042ad00fca85e480d3fda37f
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < 29c59212a507804d7616b8abf491d30b4ab8e75f
- affected 182ee45da083db4e3e621541ccf255bfa9652214 – < f57b399c4fa1501b2d5451f52d861ece86bcf3db
- affected 5.17
- unaffected < 5.17
- unaffected 6.1.187 – ≤ 6.1.*
- unaffected 6.6.156 – ≤ 6.6.*
- unaffected 6.12.108 – ≤ 6.12.*
- unaffected 6.18.47 – ≤ 6.18.*
- unaffected 7.1.11 – ≤ 7.1.*
- unaffected 7.2.1 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/bb5f5414d1a6272a16f68684e998f4063dd19f57 (opens in a new tab)
- https://git.kernel.org/stable/c/b5181516a9f5c2fdb3271cdad72a5b16c6963a44 (opens in a new tab)
- https://git.kernel.org/stable/c/87ad116ac3abc6f2ce2b5b6c488f633003581eee (opens in a new tab)
- https://git.kernel.org/stable/c/fe93a697a7a92fa9adf78c9ff67a10db3193290c (opens in a new tab)
- https://git.kernel.org/stable/c/95bb57bc11a91caf042ad00fca85e480d3fda37f (opens in a new tab)
- https://git.kernel.org/stable/c/29c59212a507804d7616b8abf491d30b4ab8e75f (opens in a new tab)
- https://git.kernel.org/stable/c/f57b399c4fa1501b2d5451f52d861ece86bcf3db (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-71405 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-80762)Record last updated .