First published: Mon Jan 09 2023(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
redhat/Linux kernel | <6.2 | 6.2 |
Linux Kernel | >=5.11<5.15.91 | |
Linux Kernel | >=5.16<6.1.9 | |
Linux Kernel | =6.2-rc1 | |
Linux Kernel | =6.2-rc2 | |
Linux Kernel | =6.2-rc3 | |
Linux Kernel | =6.2-rc4 | |
Linux Kernel | =6.2-rc5 | |
debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 |
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CVE-2023-0386 has a high severity level due to its capability for local privilege escalation.
To address CVE-2023-0386, update to the patched Linux kernel versions 6.2 or any recommended versions from your Linux distribution.
CVE-2023-0386 affects Linux kernel versions from 5.11 up to 6.1.9 and includes several release candidates of 6.2.
CVE-2023-0386 is not remotely exploitable; it requires local access to the system.
CVE-2023-0386 compromises the security of setuid files with capabilities in the Linux kernel's OverlayFS subsystem.