CVE-2023-0386

high-risk
Published 2023-03-22

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

Do I need to act?

!
52.4% chance of exploitation in next 30 days
EPSS score — higher than 48% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (15)

Affected Vendors

Debian Linux Canonical Netapp

References (13)

Third Party Advisory http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LS...
Broken Link https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f...
Mailing List https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230420-0004/
Third Party Advisory https://www.debian.org/security/2023/dsa-5402
Third Party Advisory http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LS...
Broken Link https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f...
Mailing List https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230420-0004/
Third Party Advisory https://www.debian.org/security/2023/dsa-5402
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-...
67
/ 100
high-risk
Severity 24/34 · High
Exploitability 25/34 · High
Exposure 18/34 · Moderate