# CVE-2022-50837: linux: In the Linux kernel, the following vulnerability has been resolved:  net: dsa: tag_8021q: avoid leaking ctx on dsa_ta...

CVE-2022-50837 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50837, released December 30, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50837
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: dsa: tag_8021q: avoid leaking ctx on dsa_tag_8021q_register() error path  If dsa_tag_8021q_setup() fails, for example due to the inability of the device to install a VLAN, the tag_8021q context of the switch will leak. Make sure it is freed on the error path.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50837](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50837.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50837](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50837.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50837](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50837.md) | Dec 30, 2025 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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