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.
History

Mon, 12 May 2025 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-617
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Fri, 20 Dec 2024 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-21T14:35:25.345Z

Updated: 2025-05-04T07:08:20.792Z

Reserved: 2024-05-21T13:27:52.133Z

Link: CVE-2021-47305

cve-icon Vulnrichment

Updated: 2024-08-04T05:32:08.577Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-21T15:15:18.177

Modified: 2025-05-12T20:00:28.990

Link: CVE-2021-47305

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47305 - Bugzilla