CVE-2026-53252
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: fix memory leak in error path of hci_alloc_dev()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 90dee0a0ff84fac8accd5be98412b3819f667149 | affected | git | 5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd | Unavailable | None listed |
| c56b177efce8b62798e4d96bdb9867106cb7c4a0 | affected | git | c016118b9e51eeaf5bc93850d4c455a3b583c0aa | Unavailable | None listed |
| bc0819a25e04cd68ef3568cfa51b63118fea39a7 | affected | git | 0622e527a31d4b44737fed5c1a2ac1fc2cfb5184 | Unavailable | None listed |
| ce23b73f0f27e2dbeb81734a79db710f05aa33c6 | affected | git | bc2efe73c194a74839d7cf57b63880d97e21d309 | Unavailable | None listed |
| 1d6123102e9fbedc8d25bf4731da6d513173e49e | affected | git | ce4b4cac3c5749b6aa75e62e2991ae2263f2f889 | Unavailable | None listed |
| 1d6123102e9fbedc8d25bf4731da6d513173e49e | affected | git | f82799407a50af7bcacacf09cc9b279af8fe9b81 | Unavailable | None listed |
| 1d6123102e9fbedc8d25bf4731da6d513173e49e | affected | git | 37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f | Unavailable | None listed |
| dd4becd3fd4102696e1c15e6d260a1712a2d8685 | affected | git | Unavailable | Unavailable | None listed |
| 0e5c144c557df910ab64d9c25d06399a9a735e65 | affected | git | Unavailable | Unavailable | None listed |
| 5.15.209 | affected | semver | 5.15.210 | Unavailable | None listed |
| 6.1.167 | affected | semver | 6.1.176 | Unavailable | None listed |
| 6.6.97 | affected | semver | 6.6.143 | Unavailable | None listed |
| 6.12.36 | affected | semver | 6.12.94 | Unavailable | None listed |
| 5.10.259 | affected | semver | 5.11 | Unavailable | None listed |
| 6.15.5 | affected | semver | 6.16 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.16 | Unavailable | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |