VYPR
Unrated severityNVD Advisory· Published May 21, 2024· Updated May 4, 2025

dma-buf/sync_file: Don't leak fences on merge failure

CVE-2021-47305

Description

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.

Affected products

90

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

6

News mentions

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