# CVE-2022-3977: linux: A use-after-free flaw was found in the Linux kernel MCTP (Management Component Transport Protocol) functionality

CVE-2022-3977 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-3977, released January 12, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-3977
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 12, 2023

## Description

A use-after-free flaw was found in the Linux kernel MCTP (Management Component Transport Protocol) functionality. This issue occurs when a user simultaneously calls DROPTAG ioctl and socket close happens, which could allow a local user to crash the system or potentially escalate their privileges on the system.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.2-1 | [DEBIAN-CVE-2022-3977](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3977.md) | Jan 12, 2023 |
| Linux | linux Debian 13.5 (trixie) | 6.0.2-1 | [DEBIAN-CVE-2022-3977](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3977.md) | Jan 12, 2023 |
| Linux | linux Debian 14 | 6.0.2-1 | [DEBIAN-CVE-2022-3977](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3977.md) | Jan 12, 2023 |

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