Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 90dee0a0ff84fac8accd5be98412b3819f667149 before 5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd; affected c56b177efce8b62798e4d96bdb9867106cb7c4a0 before c016118b9e51eeaf5bc93850d4c455a3b583c0aa; affected bc0819a25e04cd68ef3568cfa51b63118fea39a7 before 0622e527a31d4b44737fed5c1a2ac1fc2cfb5184; affected ce23b73f0f27e2dbeb81734a79db710f05aa33c6 before bc2efe73c194a74839d7cf57b63880d97e21d309; affected 1d6123102e9fbedc8d25bf4731da6d513173e49e before ce4b4cac3c5749b6aa75e62e2991ae2263f2f889; affected 1d6123102e9fbedc8d25bf4731da6d513173e49e before f82799407a50af7bcacacf09cc9b279af8fe9b81; affected 1d6123102e9fbedc8d25bf4731da6d513173e49e before 37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f; affected dd4becd3fd4102696e1c15e6d260a1712a2d8685; affected 0e5c144c557df910ab64d9c25d06399a9a735e65; affected 5.15.209 before 5.15.210; affected 6.1.167 before 6.1.176; affected 6.6.97 before 6.6.143; affected 6.12.36 before 6.12.94; affected 5.10.259 before 5.11; affected 6.15.5 before 6.16 |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd
- https://git.kernel.org/stable/c/c016118b9e51eeaf5bc93850d4c455a3b583c0aa
- https://git.kernel.org/stable/c/0622e527a31d4b44737fed5c1a2ac1fc2cfb5184
- https://git.kernel.org/stable/c/bc2efe73c194a74839d7cf57b63880d97e21d309
- https://git.kernel.org/stable/c/ce4b4cac3c5749b6aa75e62e2991ae2263f2f889
- https://git.kernel.org/stable/c/f82799407a50af7bcacacf09cc9b279af8fe9b81
- https://git.kernel.org/stable/c/37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f