CVE-2026-80764Bluetooth: hci_event: fix LE list UAF on reset
- —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_event: fix LE list UAF on reset hci_cc_reset() clears the LE accept and resolving lists without taking hdev->lock. Other command-complete handlers serialize updates to these lists with that lock, and the debugfs readers hold it while walking them. This permits the reset completion and a debugfs read to interleave as follows: hci_rx_work debugfs reader ----------- -------------- lock hdev->lock fetch current entry list_del(entry) kfree(entry) read entry fields The reader then dereferences a freed list entry and may follow its stale next pointer. KASAN reported: BUG: KASAN: slab-use-after-free in white_list_show+0x15f/0x180 Read of size 1 at addr ffff8881015dab16 by task poc/95 Call Trace: white_list_show+0x15f/0x180 seq_read_iter+0x3ff/0x1190 seq_read+0x267/0x3d0 vfs_read+0x177/0xa20 ksys_read+0xf7/0x1c0 Allocated by task 91: hci_bdaddr_list_add+0x1a6/0x3a0 hci_cc_le_add_to_accept_list+0xab/0x140 hci_cmd_complete_evt+0x26c/0x9a0 hci_event_packet+0x454/0xb20 hci_rx_work+0x293/0x730 Freed by task 90: kfree+0x131/0x3c0 hci_bdaddr_list_clear+0xd8/0x160 hci_cc_reset+0x28a/0x370 hci_cmd_complete_evt+0x26c/0x9a0 hci_event_packet+0x454/0xb20 hci_rx_work+0x293/0x730 Take hdev->lock around both list clears. This matches the existing mutation and traversal locking convention.
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 a4d5504d5c39cc84f1f828e19967595597a8136e – < 8e68c380290b1dd64a0a512ce66d0264130c46ed
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < 0628cc9b2fa29985a7b8c774741f8a736b0f5e7c
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < d57702d4c55633c243da5a2fec37ae2ad4adb621
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < 39a3afb91be3cb465f46ce7a8e5696d9e33edf93
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < b55e83a4ba31d40deae22d4e4dc8c84083e953c6
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < 25b05e3ce31d954540e99954bcc66cbceb27ab35
- affected a4d5504d5c39cc84f1f828e19967595597a8136e – < 33af47e847fe4a28b109673affb5874015d54f5a
- affected 0de8cd646b0152c9ddd10257d8284938d0df0181
- affected 3.18.3 – < 3.19
- affected 3.19
- unaffected < 3.19
- unaffected 6.1.185 – ≤ 6.1.*
- unaffected 6.6.154 – ≤ 6.6.*
- unaffected 6.12.106 – ≤ 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/8e68c380290b1dd64a0a512ce66d0264130c46ed (opens in a new tab)
- https://git.kernel.org/stable/c/0628cc9b2fa29985a7b8c774741f8a736b0f5e7c (opens in a new tab)
- https://git.kernel.org/stable/c/d57702d4c55633c243da5a2fec37ae2ad4adb621 (opens in a new tab)
- https://git.kernel.org/stable/c/39a3afb91be3cb465f46ce7a8e5696d9e33edf93 (opens in a new tab)
- https://git.kernel.org/stable/c/b55e83a4ba31d40deae22d4e4dc8c84083e953c6 (opens in a new tab)
- https://git.kernel.org/stable/c/25b05e3ce31d954540e99954bcc66cbceb27ab35 (opens in a new tab)
- https://git.kernel.org/stable/c/33af47e847fe4a28b109673affb5874015d54f5a (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-2026-71407 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80764)Record last updated .