CVE-2021-46923
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…
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-668
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.