CVE-2022-2991: Linux Kernel

Medium severity, CVSS 6.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. This vulnerability allows a local attacker to escalate privileges and execute arbitrary code in the context of the kernel. The attacker must first obtain the ability to execute high-privileged code on the target system to exploit this vulnerability.

Affected products

• Linux Linux Kernel: before 5.15 (fixed in 5.15)

Published 2022-08-25. Last modified 2026-06-17.