CVE-2022-2991 Memory corruption in kernel

What is CVE-2022-2991?

CVE-2022-2991 is a medium-severity memory corruption vulnerability in Linux kernel, published on 25 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2022-2991?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-2991?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-2991 being exploited?

There is no known exploitation of CVE-2022-2991 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-2991, GHSA-9fpj-jhm5-p6h9, UBUNTU-CVE-2022-2991.