U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2021-47305 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705ce
https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705ce
https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27
https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27
https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8
https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8
https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902
https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902
https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8
https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8
https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435
https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47305
NVD Published Date:
05/21/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org