Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.12.0, < 5.15.13 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663Patch
- https://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341dPatch
- https://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663Patch
- https://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341dPatch
FAQ
What is CVE-2021-46923?
CVE-2021-46923 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2021-46923?
CVE-2021-46923 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-46923?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.