Answer in brief
CVE-2026-99014 records a High severity (CVSS 7.8) vulnerability in Bluetooth: hci_sync: Fix command skb lifetime during scan setup. 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 7.8. 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 | >=de3c85d321bfb85b7742a6cfab95d680da3e26b1 <f01cbddfb4273fcc9a786d13b0a2525029023605 || >=22cbf4f84c00da64196eb15034feee868e63eef0 <119ba8070b3f112dd36c897f4f70ea5bb7d370b8 || >=22cbf4f84c00da64196eb15034feee868e63eef0 <7db33b36213a3a1a40940c009ddac30670b55922 || >=22cbf4f84c00da64196eb15034feee868e63eef0 <762850c203fab1190ad6a3de41cd51920b22236d || >=22cbf4f84c00da64196eb15034feee868e63eef0 <9af12272061d206af8bc3e40215cb694421ab73a || 7a54f8314584f78fb0557153b1059924249ef628 || >=6.6.28 <6.6.160 || >=6.8.7 <6.9 | f01cbddfb4273fcc9a786d13b0a2525029023605, 119ba8070b3f112dd36c897f4f70ea5bb7d370b8, 7db33b36213a3a1a40940c009ddac30670b55922, 762850c203fab1190ad6a3de41cd51920b22236d, 9af12272061d206af8bc3e40215cb694421ab73a, 6.6.160, 6.9 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix command skb lifetime during scan setup During PA sync scan setup, hci_le_set_ext_scan_param_sync() gets the address used for the PA_LINK lookup from hci_sent_cmd_data(). The returned pointer borrows storage from sent_cmd or req_skb, without holding a reference to either skb. The scan worker runs on req_workqueue while hci_cmd_work() runs on the separate device workqueue. After the scan worker loads sent_cmd, the command worker can free and replace it before hci_sent_cmd_data() dereferences the skb. The command payload can also be freed between returning from the helper and comparing the address. The connection lookup's RCU critical section does not protect the command skb. KASAN reported: BUG: KASAN: slab-use-after-free in hci_sent_cmd_data+0x27c/0x2f0 Workqueue: hci0 hci_cmd_sync_work Call Trace: hci_sent_cmd_data+0x27c/0x2f0 hci_le_set_scan_param_sync+0x43a/0x850 hci_passive_scan_sync+0xb09/0x1460 hci_update_passive_scan_sync+0x47c/0x6e0 hci_le_pa_create_sync+0x200/0xa70 hci_cmd_sync_work+0x13c/0x290 Allocated by task 95: skb_clone+0x13f/0x340 hci_cmd_work+0x2a9/0x7e0 Freed by task 95: kmem_cache_free+0xba/0x3a0 hci_cmd_work+0x29c/0x7e0 Use hdev->lock to serialize the address snapshot with sent_cmd replacement. Protect req_skb replacement and completion cleanup with the same lock because the helper falls back to that skb. Copy the address before releasing the lock and use the copy for the existing RCU-protected connection lookup. Release the mutex before sending or waiting for commands, preserving the lookup and completion ordering.
Quoted source text, attributed separately from HOL analysis.