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Change History

CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

dma-buf: Fix NULL pointer dereference in sanitycheck()

If due to a memory allocation failure mock_chain() returns NULL, it is
passed to dma_fence_enable_sw_signaling() resulting in NULL pointer
dereference there.

Call dma_fence_enable_sw_signaling() only if mock_chain() succeeds.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

kernel.org https://git.kernel.org/stable/c/0336995512cdab0c65e99e4cdd47c4606debe14e [No types assigned]

kernel.org https://git.kernel.org/stable/c/156c226cbbdcf5f3bce7b2408a33b59fab7fae2c [No types assigned]

kernel.org https://git.kernel.org/stable/c/2295bd846765c766701e666ed2e4b35396be25e6 [No types assigned]

kernel.org https://git.kernel.org/stable/c/eabf131cba1db12005a68378305f13b9090a7a6b [No types assigned]