Linux Kernel Improper Ownership Management
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2025-07-08 · passed 1 year 2 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Linux Kernel contains an improper ownership management vulnerability, 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.
Who is affected
Linux Kernel. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-282.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 1 year 2 months ago
Sources
- NVD entry for CVE-2023-0386 nvd.nist.gov/vuln/detail/CVE-2023-0386
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- git.kernel.org git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- access.redhat.com access.redhat.com/security/cve/cve-2023-0386
- security.netapp.com security.netapp.com/advisory/ntap-20230420-0004/
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2023-0386