Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: gpio: xilinx: fix runtime PM leak on request error path pm_runtime_get_sync() leaves the usage counter incremented even when it fails, and xgpio_request() returns the error without dropping it. gpiolib does not call ->free() when ->request() fails, so xgpio_free(), which holds the only matching pm_runtime_put(), never runs. The reference is leaked and the controller can no longer runtime-suspend, so its clock stays enabled. Switch to pm_runtime_resume_and_get(), which only increments the usage counter on success.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 26b04774621ed333e8bc56479feb6e31625df58c before b07b3925f676640103b3d74b93fc401b1c873d13; affected 26b04774621ed333e8bc56479feb6e31625df58c before f73ee2bd2293f8cc340061c5229395ace71fc2eb; affected 26b04774621ed333e8bc56479feb6e31625df58c before a027e0d7765d1531ee39e4dae81951b04f32ba7b; affected 26b04774621ed333e8bc56479feb6e31625df58c before 2fd6ecda5d1f47cffcfadddb35ee49402162c724; affected 26b04774621ed333e8bc56479feb6e31625df58c before ff82fc3a4a1d417dee1229681cc5285986edb1fa |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; 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/b07b3925f676640103b3d74b93fc401b1c873d13
- https://git.kernel.org/stable/c/f73ee2bd2293f8cc340061c5229395ace71fc2eb
- https://git.kernel.org/stable/c/a027e0d7765d1531ee39e4dae81951b04f32ba7b
- https://git.kernel.org/stable/c/2fd6ecda5d1f47cffcfadddb35ee49402162c724
- https://git.kernel.org/stable/c/ff82fc3a4a1d417dee1229681cc5285986edb1fa