CVE-2021-46923

fs/mount_setattr: always cleanup mount_kattr

Published Feb 27, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History

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Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
May 11, 2026, 1:44 PM
Reserved
Feb 25, 2024, 1:45 PM
Status
Modified
Published
Feb 27, 2024, 10:15 AM
Modified
Jun 17, 2026, 4:15 AM
Severity
Low
Public date
Feb 27, 2024, 12:00 AM