Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: gpio: exar: initialize the ID before registering its cleanup devm_add_action_or_reset() invokes the cleanup action immediately when registering the action fails. gpio_exar_probe() currently stores the allocated ID in exar_gpio only after registering the action, so that failure makes exar_devm_ida_free() release ID 0. If the allocated ID is nonzero, this leaks that ID and can free ID 0 belonging to another device. Store the ID before registering the cleanup action so both the immediate failure path and normal device teardown release the correct allocation.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5300ebb695fa0672589ab191062392f686fca75d before bf3d841ef12fcbec4458e2750956b738b043a226; affected 5300ebb695fa0672589ab191062392f686fca75d before b78c114600ae3df90c083c72c290437b068577c8; affected 5300ebb695fa0672589ab191062392f686fca75d before 01318927a9055136c207399eeb36ce07becac179; affected 5300ebb695fa0672589ab191062392f686fca75d before f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2; affected 5300ebb695fa0672589ab191062392f686fca75d before 4d69e74034b208588636ecc177e0dd43a7696af3 |
| Linux / Linux | affected 5.11; unaffected 0 before 5.11; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.57 through 6.18.*; unaffected 7.2.11 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/bf3d841ef12fcbec4458e2750956b738b043a226
- https://git.kernel.org/stable/c/b78c114600ae3df90c083c72c290437b068577c8
- https://git.kernel.org/stable/c/01318927a9055136c207399eeb36ce07becac179
- https://git.kernel.org/stable/c/f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2
- https://git.kernel.org/stable/c/4d69e74034b208588636ecc177e0dd43a7696af3