# CVE-2022-49234: linux: In the Linux kernel, the following vulnerability has been resolved:  net: dsa: Avoid cross-chip syncing of VLAN filte...

CVE-2022-49234 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49234, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-49234
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: dsa: Avoid cross-chip syncing of VLAN filtering  Changes to VLAN filtering are not applicable to cross-chip notifications.  On a system like this:  .-----.   .-----.   .-----. | sw1 +---+ sw2 +---+ sw3 | '-1-2-'   '-1-2-'   '-1-2-'  Before this change, upon sw1p1 leaving a bridge, a call to dsa_port_vlan_filtering would also be made to sw2p1 and sw3p1.  In this scenario:  .---------.   .-----.   .-----. |   sw1   +---+ sw2 +---+ sw3 | '-1-2-3-4-'   '-1-2-'   '-1-2-'  When sw1p4 would leave a bridge, dsa_port_vlan_filtering would be called for sw2 and sw3 with a non-existing port - leading to array out-of-bounds accesses and crashes on mv88e6xxx.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-49234](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49234.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-49234](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49234.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-49234](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49234.md) | Feb 26, 2025 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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