# CVE-2022-42719: backport-iwlwifi-dkms: A use-after-free in the mac80211 stack when parsing a multi-BSSID element in the Linux kernel 5.2 through 5.19.x befo...

CVE-2022-42719 is fixed in 2 products on 1 platform, first by backport-iwlwifi-dkms 8324-0ubuntu3~20.04.5, released October 13, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-42719
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0135
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 13, 2022

## Description

A use-after-free in the mac80211 stack when parsing a multi-BSSID element in the Linux kernel 5.2 through 5.19.x before 5.19.16 could be used by attackers (able to inject WLAN frames) to crash the kernel and potentially execute code.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | backport-iwlwifi-dkms Ubuntu 20.04 LTS (focal) | 8324-0ubuntu3~20.04.5 | [backport-iwlwifi-dkms 8324-0ubuntu3~20.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-backport-iwlwifi-dkms-8324-0ubuntu3-20.04.5.md) | Oct 13, 2022 |
| Linux | backport-iwlwifi-dkms Ubuntu 22.04.1 LTS (jammy) | 9858-0ubuntu3.1 | [backport-iwlwifi-dkms 9858-0ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-backport-iwlwifi-dkms-9858-0ubuntu3.1.md) | Oct 13, 2022 |
| Linux | linux Debian 12.15 (bookworm) | 6.0.2-1 | [DEBIAN-CVE-2022-42719](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42719.md) | Oct 13, 2022 |
| Linux | linux Debian 13.5 (trixie) | 6.0.2-1 | [DEBIAN-CVE-2022-42719](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42719.md) | Oct 13, 2022 |
| Linux | linux Debian 14 | 6.0.2-1 | [DEBIAN-CVE-2022-42719](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42719.md) | Oct 13, 2022 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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