Vulnerability details
CVE-2025-40284
Bluetooth: MGMT: cancel mesh send timer when hdev removed
Official description
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 ------
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | b338d91703fae6f6afd67f3f75caa3b8f36ddef3 ≤ v < 990e6143b0ca0c66f099d67d00c112bf59b30d76 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | b338d91703fae6f6afd67f3f75caa3b8f36ddef3 ≤ v < 2927ff643607eddf4f03d10ef80fe10d977154aa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | b338d91703fae6f6afd67f3f75caa3b8f36ddef3 ≤ v < 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | b338d91703fae6f6afd67f3f75caa3b8f36ddef3 ≤ v < fd62ca5ad136dcf6f5aa308423b299a6be6f54ea | CVEProject cvelistV5 (CNA) |
| Linux | Linux | b338d91703fae6f6afd67f3f75caa3b8f36ddef3 ≤ v < 55fb52ffdd62850d667ebed842815e072d3c9961 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76
- https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa
- https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b
- https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea
- https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961
Details
- Published
- 2025-12-07
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- —