Answer in brief
CVE-2024-26801 records a High severity (CVSS 8.8) vulnerability in Bluetooth: Avoid potential use-after-free in hci_error_reset. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <e0b278650f07acf2e0932149183458468a731c03 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <98fb98fd37e42fd4ce13ff657ea64503e24b6090 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <da4569d450b193e39e87119fd316c0291b585d14 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <45085686b9559bfbe3a4f41d3d695a520668f5e1 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <2ab9a19d896f5a0dd386e1f001c5309bc35f433b || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <dd594cdc24f2e48dab441732e6dfcafd6b0711d1 || >=c7741d16a57cbf97eebe53f27e8216b1ff20e20c <2449007d3f73b2842c9734f45f0aadb522daf592 | e0b278650f07acf2e0932149183458468a731c03, 98fb98fd37e42fd4ce13ff657ea64503e24b6090, 6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2, da4569d450b193e39e87119fd316c0291b585d14, 45085686b9559bfbe3a4f41d3d695a520668f5e1, 2ab9a19d896f5a0dd386e1f001c5309bc35f433b, dd594cdc24f2e48dab441732e6dfcafd6b0711d1, 2449007d3f73b2842c9734f45f0aadb522daf592 |
| Linux/Linuxgeneric | 4.0 | Not reported |
Published upstream
Apr 4, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.