CVEvulnerability
CVE-2021-3847
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2022-04-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-281
Description
An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.
Affected configurations
• linux linux kernel (<= 5.17.0)
• fedoraproject fedora 34
Related
Weakness · CWE (1)
- CWE-281 Improper Preservation of Permissions weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2009704 Issue Tracking, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/10/14/3 Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2009704 Issue Tracking, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/10/14/3 Mailing List, Third Party Advisory