CVE-2026-43219
Published: May 9, 2026Last modified: June 24, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: net: cpsw_new: Fix potential unregister of netdev that has not been registered yet If an error occurs during register_netdev() for the first MAC in cpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL, cpsw->slaves[1].ndev would remain unchanged. This could later cause cpsw_unregister_ports() to attempt unregistering the second MAC. To address this, add a check for ndev->reg_state before calling unregister_netdev(). With this change, setting cpsw->slaves[i].ndev to NULL becomes unnecessary and can be removed accordingly.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.170-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.85-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31
- https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a
- https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138
- https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415
- https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286
- https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5
- https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f