VulnerabilityModified
CVE-2021-3732
This flaw allows a local user to gain access to hidden files that should not be accessible.
MEDIUM 5.5EPSS 0.33%
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.
- 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
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631Patch, Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3732Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631Patch, Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3732Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.