CVE-2021-46923

fs/mount_setattr: always cleanup mount_kattr

Description

In the Linux kernel, the following vulnerability has been resolved: fs/mount_setattr: always cleanup mount_kattr Make sure that finish_mount_kattr() is called after mount_kattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We returned early if path lookup failed thereby risking to leak an additional reference we took when building mount_kattr when an idmapped mount was requested.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341d patch
https://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663 patch

Frequently Asked Questions

What is the severity of CVE-2021-46923?
CVE-2021-46923 has been scored as a medium severity vulnerability.
How to fix CVE-2021-46923?
To fix CVE-2021-46923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-46923 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-46923 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-46923?
CVE-2021-46923 affects Linux Linux, Linux Linux.
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