# CVE-2022-2991: linux: A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem

CVE-2022-2991 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-2991, released August 25, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-2991
- Priority: Routine
- CVSS: 6.7 (medium)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 25, 2022

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.15.3-1 | [DEBIAN-CVE-2022-2991](https://patchblox.com/security/data/fix/linux/debian-cve-2022-2991.md) | Aug 25, 2022 |
| Linux | linux Debian 13.5 (trixie) | 5.15.3-1 | [DEBIAN-CVE-2022-2991](https://patchblox.com/security/data/fix/linux/debian-cve-2022-2991.md) | Aug 25, 2022 |
| Linux | linux Debian 14 | 5.15.3-1 | [DEBIAN-CVE-2022-2991](https://patchblox.com/security/data/fix/linux/debian-cve-2022-2991.md) | Aug 25, 2022 |

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