High 7.8Published Dec 6, 2025

CVE-2025-40284Bluetooth: MGMT: cancel mesh send timer when hdev removed

Updated under an hour ago (Oct 27, 2026, 9:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b338d91703fae6f6afd67f3f75caa3b8f36ddef3 before 990e6143b0ca0c66f099d67d00c112bf59b30d76; from b338d91703fae6f6afd67f3f75caa3b8f36ddef3 before 2927ff643607eddf4f03d10ef80fe10d977154aa; from b338d91703fae6f6afd67f3f75caa3b8f36ddef3 before 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b; from b338d91703fae6f6afd67f3f75caa3b8f36ddef3 before fd62ca5ad136dcf6f5aa308423b299a6be6f54ea; from b338d91703fae6f6afd67f3f75caa3b8f36ddef3 before 55fb52ffdd62850d667ebed842815e072d3c9961	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.