CVE-2022-49212 Information

Description

In the Linux kernel the following vulnerability has been resolved:

mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init

The reference counting issue happens in several error handling paths on a refcounted object c->dmac. In these paths the function simply returns the error code forgetting to balance the reference count of

c->dmac\ increased earlier by dma_request_channel() which may cause refcount leaks.

Fix it by decrementing the refcount of specific object in those error paths.

Reference

https://git.kernel.org/stable/c/0856bf27057561f42b37df111603cf5a0d040294 https://git.kernel.org/stable/c/8baea2b96fa90af8d0f937caf4cf2105ee094d93 https://git.kernel.org/stable/c/9843c9c98f26c6ad843260b19bfdaa2598f2ae1e https://git.kernel.org/stable/c/9b08d211db4c447eb1a07df65e45e0aa772e0fa6 https://git.kernel.org/stable/c/a3587259ae553e41d1ce8c7435351a5d6b299a11 https://git.kernel.org/stable/c/f1694169f3674cdf7553aed06864254635679878 https://git.kernel.org/stable/c/fe0e2ce5c87e9c0b9485ff566362030aa55972cf https://git.kernel.org/stable/c/fecbd4a317c95d73c849648c406bcf1b6a0ec1cf