CVE-2021-47305

Publication date

2024-05-21 14:35:25

Family

Linux

State

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: dma-buf/sync_file: Dont leak fences on merge failure Each add_fence() call does a dma_fence_get() on the relevant fence. In the error path, we werent calling dma_fence_put() so all those fences got leaked. Also, in the krealloc_array failure case, we werent 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.