Bluetooth: Fix hci_suspend_sync crash
Summary
| CVE | CVE-2023-53520 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-10-01 12:15:56 UTC |
| Updated | 2026-04-06 13:13:19 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier may still be accessing it, it can cause the program to crash. Here's the call trace: <4>[102152.653246] Call Trace: <4>[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth] <4>[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth] <4>[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth] <4>[102152.653268] notifier_call_chain+0x43/0x6b <4>[102152.653271] __blocking_notifier_call_chain+0x48/0x69 <4>[102152.653273] __pm_notifier_call_chain+0x22/0x39 <4>[102152.653276] pm_suspend+0x287/0x57c <4>[102152.653278] state_store+0xae/0xe5 <4>[102152.653281] kernfs_fop_write+0x109/0x173 <4>[102152.653284] __vfs_write+0x16f/0x1a2 <4>[102152.653287] ? selinux_file_permission+0xca/0x16f <4>[102152.653289] ? security_file_permission+0x36/0x109 <4>[102152.653291] vfs_write+0x114/0x21d <4>[102152.653293] __x64_sys_write+0x7b/0xdb <4>[102152.653296] do_syscall_64+0x59/0x194 <4>[102152.653299] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 This patch holds the reference count of the hci_dev object while processing it in hci_suspend_notifier to avoid potential crash caused by the race condition. |
Risk And Classification
Primary CVSS: v3.1 4.7 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-362
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
HighPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 9952d90ea2885d7cbf80cd233f694f09a9c0eaec e1fa25a91091bbed691ba2996a6cee809e3309a2 git | Not specified |
| CNA | Linux | Linux | affected 9952d90ea2885d7cbf80cd233f694f09a9c0eaec 06e2b5ad72b60f90bfe565c201346532e271f484 git | Not specified |
| CNA | Linux | Linux | affected 9952d90ea2885d7cbf80cd233f694f09a9c0eaec f9c8ce5d665653e3cf71a76349d41d7a7f7947e6 git | Not specified |
| CNA | Linux | Linux | affected 9952d90ea2885d7cbf80cd233f694f09a9c0eaec 573ebae162111063eedc6c838a659ba628f66a0f git | Not specified |
| CNA | Linux | Linux | affected 5.7 | Not specified |
| CNA | Linux | Linux | unaffected 5.7 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.199 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.55 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.5.5 6.5.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/f9c8ce5d665653e3cf71a76349d41d7a7f7947e6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/e1fa25a91091bbed691ba2996a6cee809e3309a2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/06e2b5ad72b60f90bfe565c201346532e271f484 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/573ebae162111063eedc6c838a659ba628f66a0f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| 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.