In the Linux kernel, the following vulnerability has been resolved:

drm/radeon: fix memory leak in radeon_ring_restore() on lock failure

radeon_ring_restore() takes ownership of the data buffer allocated by
radeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in
the non-restore branch; in the restore branch it relies on
radeon_ring_restore() to free it.

If radeon_ring_lock() fails, the function returned early without calling
kvfree(data), leaking the ring backup buffer on every GPU reset that
fails at the lock stage. During repeated GPU resets this causes
cumulative kernel memory exhaustion.

Free data before returning the error.

https://git.kernel.org/stable/c/06dc892561f5a08b2493c34c8ec2cb94dea33159

https://git.kernel.org/stable/c/07c213f3499dd72e2922c1c73fe9ffea24874bef

https://git.kernel.org/stable/c/1c9ba32308c02c198c378fcdf06be9ffc3111147

https://git.kernel.org/stable/c/63912418f1fbb6456ea04bbcdf8f4d5090d23350

https://git.kernel.org/stable/c/82f1d6042611d45b8b9de423bbcb4e0ced9ec62b

https://git.kernel.org/stable/c/919e3e398bf301c6418dffdcd5e5c4fd9be39cf7

https://git.kernel.org/stable/c/ccc42187fc2d0720947a63ce1b9e399d2c068ff4

https://git.kernel.org/stable/c/eecfb76129ebef7e3aa41e18a4668cd91dfc6267

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