CVE-2024-26801Bluetooth: Avoid potential use-after-free in hci_error_reset
- 8.8HighCVSS base score
- 0.43%Exploitation in 30 daysEPSS · top 63% 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: Avoid potential use-after-free in hci_error_reset While handling the HCI_EV_HARDWARE_ERROR event, if the underlying BT controller is not responding, the GPIO reset mechanism would free the hci_dev and lead to a use-after-free in hci_error_reset. Here's the call trace observed on a ChromeOS device with Intel AX201: queue_work_on+0x3e/0x6c __hci_cmd_sync_sk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] ? init_wait_entry+0x31/0x31 __hci_cmd_sync+0x16/0x20 [bluetooth <HASH:3b4a 6>] hci_error_reset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] process_one_work+0x1d8/0x33f worker_thread+0x21b/0x373 kthread+0x13a/0x152 ? pr_cont_work+0x54/0x54 ? kthread_blkcg+0x31/0x31 ret_from_fork+0x1f/0x30 This patch holds the reference count on the hci_dev while processing a HCI_EV_HARDWARE_ERROR event to avoid potential crash.
Timeline
ID reserved
By Linux
- 45 days later
· 45 days later
Published
- 2 years later
· 2 years 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.43% · top 63% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < e0b278650f07acf2e0932149183458468a731c03
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < 98fb98fd37e42fd4ce13ff657ea64503e24b6090
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < 6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < da4569d450b193e39e87119fd316c0291b585d14
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < 45085686b9559bfbe3a4f41d3d695a520668f5e1
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < 2ab9a19d896f5a0dd386e1f001c5309bc35f433b
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < dd594cdc24f2e48dab441732e6dfcafd6b0711d1
- affected c7741d16a57cbf97eebe53f27e8216b1ff20e20c – < 2449007d3f73b2842c9734f45f0aadb522daf592
- affected 4.0
- unaffected < 4.0
- unaffected 4.19.309 – ≤ 4.19.*
- unaffected 5.4.271 – ≤ 5.4.*
- unaffected 5.10.212 – ≤ 5.10.*
- unaffected 5.15.151 – ≤ 5.15.*
- unaffected 6.1.81 – ≤ 6.1.*
- unaffected 6.6.21 – ≤ 6.6.*
- unaffected 6.7.9 – ≤ 6.7.*
- unaffected 6.8 – ≤ *
References
References10
- https://git.kernel.org/stable/c/e0b278650f07acf2e0932149183458468a731c03 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/98fb98fd37e42fd4ce13ff657ea64503e24b6090 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/da4569d450b193e39e87119fd316c0291b585d14 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/45085686b9559bfbe3a4f41d3d695a520668f5e1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/2ab9a19d896f5a0dd386e1f001c5309bc35f433b (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/dd594cdc24f2e48dab441732e6dfcafd6b0711d1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/2449007d3f73b2842c9734f45f0aadb522daf592 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html (opens in a new tab)x_transferred
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-2024-24063 (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-2024-26801)Record last updated .