Answer in brief
CVE-2025-40284 records a High severity (CVSS 7.8) vulnerability in Bluetooth: MGMT: cancel mesh send timer when hdev removed. 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 | >=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <990e6143b0ca0c66f099d67d00c112bf59b30d76 || >=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <2927ff643607eddf4f03d10ef80fe10d977154aa || >=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b || >=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <fd62ca5ad136dcf6f5aa308423b299a6be6f54ea || >=b338d91703fae6f6afd67f3f75caa3b8f36ddef3 <55fb52ffdd62850d667ebed842815e072d3c9961 | 990e6143b0ca0c66f099d67d00c112bf59b30d76, 2927ff643607eddf4f03d10ef80fe10d977154aa, 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b, fd62ca5ad136dcf6f5aa308423b299a6be6f54ea, 55fb52ffdd62850d667ebed842815e072d3c9961 |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Dec 6, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: cancel mesh send timer when hdev removed mesh_send_done timer is not canceled when hdev is removed, which causes crash if the timer triggers after hdev is gone. Cancel the timer when MGMT removes the hdev, like other MGMT timers. Should fix the BUG: sporadically seen by BlueZ test bot (in "Mesh - Send cancel - 1" test). Log: ------ BUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0 ... Freed by task 36: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x43/0x70 kfree+0x103/0x500 device_release+0x9a/0x210 kobject_put+0x100/0x1e0 vhci_release+0x18b/0x240 ------
Quoted source text, attributed separately from HOL analysis.