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Change History

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

misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup

In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to
the dma_buf for comparison purposes. However, this reference is never
released when the function returns, leading to a dma_buf memory leak.

Fix this by adding dma_buf_put before returning from the function,
ensuring that the temporarily acquired reference is properly released
regardless of whether a matching map is found.

Rule: add

https://git.kernel.org/stable/c/214e81a63a9aa0be42382ef0365ba5ed32c513ab

https://git.kernel.org/stable/c/9a297a68c3ba4a7ecb31ed52f61bd6634abb79d3

https://git.kernel.org/stable/c/c2fef5ebb73f3dabae6fbc571d181914ed32c483

https://git.kernel.org/stable/c/e17b13387827adce7acb19ac0f07f9bcafe0ff4c

https://git.kernel.org/stable/c/fff111bf45cbeeb659324316d68554e35d350092