CVE-2026-53252
- Source
- https://cve.org/CVERecord?id=CVE-2026-53252
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53252.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53252
- Downstream
AZL (1)
BELL (1)
CGA (6)
DEBIAN (1)
ECHO (1)
MGASA (1)
OESA (2)
openSUSE (1)
SUSE (12)
- Related
- Published
- 2026-06-25T08:39:43Z
- Modified
- 2026-10-20T12:00:19Z
- Summary
- Bluetooth: fix memory leak in error path of hci_alloc_dev()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: fix memory leak in error path of hci_alloc_dev()
Early failures in Bluetooth HCI UART configuration leak SRCU percpu memory.
When device initialization fails before hci_register_dev() completes, the HCI_UNREGISTER flag is never set. As a result, when the device reference count reaches zero, bt_host_release() evaluates this flag as false and falls back to a direct kfree(hdev).
Because hci_release_dev() is bypassed, the SRCU struct initialized early in hci_alloc_dev() is never cleaned up, resulting in a leak of percpu memory.
Fix the leak by explicitly calling cleanup_srcu_struct() in the fallback (unregistered) branch of bt_host_release() before freeing the device.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53252.json" }- References
-
- https://git.kernel.org/stable/c/0622e527a31d4b44737fed5c1a2ac1fc2cfb5184
- https://git.kernel.org/stable/c/37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f
- https://git.kernel.org/stable/c/5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd
- https://git.kernel.org/stable/c/bc2efe73c194a74839d7cf57b63880d97e21d309
- https://git.kernel.org/stable/c/c016118b9e51eeaf5bc93850d4c455a3b583c0aa
- https://git.kernel.org/stable/c/ce4b4cac3c5749b6aa75e62e2991ae2263f2f889
- https://git.kernel.org/stable/c/f82799407a50af7bcacacf09cc9b279af8fe9b81
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53252.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53252
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced90dee0a0ff84fac8accd5be98412b3819f667149Fixed5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc56b177efce8b62798e4d96bdb9867106cb7c4a0Fixedc016118b9e51eeaf5bc93850d4c455a3b583c0aa
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbc0819a25e04cd68ef3568cfa51b63118fea39a7Fixed0622e527a31d4b44737fed5c1a2ac1fc2cfb5184
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedce23b73f0f27e2dbeb81734a79db710f05aa33c6Fixedbc2efe73c194a74839d7cf57b63880d97e21d309
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1d6123102e9fbedc8d25bf4731da6d513173e49eFixedce4b4cac3c5749b6aa75e62e2991ae2263f2f889Fixedf82799407a50af7bcacacf09cc9b279af8fe9b81Fixed37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.15.209Fixed5.15.210
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.167Fixed6.1.176
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.97Fixed6.6.143
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.36Fixed6.12.94
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.10.259Fixed5.11
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.15.5Fixed6.16
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceddd4becd3fd4102696e1c15e6d260a1712a2d8685
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0e5c144c557df910ab64d9c25d06399a9a735e65
Affected versions
v5.*
v5.10.259
v5.10.260
v5.10.261
v5.10.262
v5.10.263
v5.10.264
v5.10.265
v5.10.266
v5.10.267
v5.10.268
v5.10.269
v5.10.270
v5.10.271
v5.10.272
v5.15.209
v6.*
v6.1.167
v6.1.168
v6.1.169
v6.1.170
v6.1.171
v6.1.172
v6.1.173
v6.1.174
v6.1.175
v6.12.36
v6.12.37
v6.12.38
v6.12.39
v6.12.40
v6.12.41
v6.12.42
v6.12.43
v6.12.44
v6.12.45
v6.12.46
v6.12.47
v6.12.48
v6.12.49
v6.12.50
v6.12.51
v6.12.52
v6.12.53
v6.12.54
v6.12.55
v6.12.56
v6.12.57
v6.12.58
v6.12.59
v6.12.60
v6.12.61
v6.12.62
v6.12.63
v6.12.64
v6.12.65
v6.12.66
v6.12.67
v6.12.68
v6.12.69
v6.12.70
v6.12.71
v6.12.72
v6.12.73
v6.12.74
v6.12.75
v6.12.76
v6.12.77
v6.12.78
v6.12.79
v6.12.80
v6.12.81
v6.12.82
v6.12.83
v6.12.84
v6.12.85
v6.12.86
v6.12.87
v6.12.88
v6.12.89
v6.12.90
v6.12.91
v6.12.92
v6.12.93
v6.15.10
v6.15.11
v6.15.5
v6.15.6
v6.15.7
v6.15.8
v6.15.9
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.105
v6.6.106
v6.6.107
v6.6.108
v6.6.109
v6.6.110
v6.6.111
v6.6.112
v6.6.113
v6.6.114
v6.6.115
v6.6.116
v6.6.117
v6.6.118
v6.6.119
v6.6.120
v6.6.121
v6.6.122
v6.6.123
v6.6.124
v6.6.125
v6.6.126
v6.6.127
v6.6.128
v6.6.129
v6.6.130
v6.6.131
v6.6.132
v6.6.133
v6.6.134
v6.6.135
v6.6.136
v6.6.137
v6.6.138
v6.6.139
v6.6.140
v6.6.141
v6.6.142
v6.6.97
v6.6.98
v6.6.99
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.15.210
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.176
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.143
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.94
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.36
- Type
- ECOSYSTEM
- Events
-
Introduced6.16.0Fixed7.0.13