Bluetooth: MGMT: cancel mesh send timer when hdev removed
Summary
| CVE | CVE-2025-40284 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-12-06 22:15:56 UTC |
| Updated | 2026-07-30 06:24:26 UTC |
| 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 ------ |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001240000 probability, percentile 0.025160000 (date 2026-07-31)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 990e6143b0ca0c66f099d67d00c112bf59b30d76 git | Not specified |
| CNA | Linux | Linux | affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 2927ff643607eddf4f03d10ef80fe10d977154aa git | Not specified |
| CNA | Linux | Linux | affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b git | Not specified |
| CNA | Linux | Linux | affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 fd62ca5ad136dcf6f5aa308423b299a6be6f54ea git | Not specified |
| CNA | Linux | Linux | affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 55fb52ffdd62850d667ebed842815e072d3c9961 git | Not specified |
| CNA | Linux | Linux | affected 6.1 | Not specified |
| CNA | Linux | Linux | unaffected 6.1 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.159 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.117 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.59 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.17.9 6.17.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.