CVE-2023-0386
HighActively exploited (CISA KEV)
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.
SeverityHigh
CVSS7.8
Exploit probability95. percentile7.9%
Product
Linux Kernel
PublishedMar 22, 2023
First seenMar 22, 2023
Added to KEVJun 17, 2025
Weakness typeCWE-282CWE-282
How to fix
CISA required action
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 due date: Jul 8, 2025Update
- linux linux_kernel5.15.91, 6.1.9 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.11 ≤ v < 5.15.91, 5.16 ≤ v < 6.1.9, 6.2 | 5.15.91, 6.1.9 |
| debian debian_linux | 10.0 | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp h410c_firmware | No range specified | — |
| canonical ubuntu_linux | 18.04, 20.04, 22.04 | — |
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