CVE-2023-0386

Description

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 22.72% Top 5%
Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a Kernel
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a mailing list patch vendor advisory
https://security.netapp.com/advisory/ntap-20230420-0004/ third party advisory
https://www.debian.org/security/2023/dsa-5402 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html third party advisory mailing list
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html third party advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html mailing list

Frequently Asked Questions

What is the severity of CVE-2023-0386?
CVE-2023-0386 has been scored as a high severity vulnerability.
How to fix CVE-2023-0386?
To fix CVE-2023-0386, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-0386 being actively exploited in the wild?
It is possible that CVE-2023-0386 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~23% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0386?
CVE-2023-0386 affects n/a Kernel.
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