CVE-2021-47305 (GCVE-0-2021-47305)
Vulnerability from cvelistv5
Published
2024-05-21 14:35
Modified
2025-05-04 07:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dma-buf/sync_file: Don't leak fences on merge failure Each add_fence() call does a dma_fence_get() on the relevant fence. In the error path, we weren't calling dma_fence_put() so all those fences got leaked. Also, in the krealloc_array failure case, we weren't freeing the fences array. Instead, ensure that i and fences are always zero-initialized and dma_fence_put() all the fences and kfree(fences) on every error path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705cePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435Patch
Impacted products
Vendor Product Version
Linux Linux Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
Version: a02b9dc90d844cc7df7b63264e7920cc425052d9
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   Linux Linux Version: 4.9
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}


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