CVE-2026-43219

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138Patch
• https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415Patch
• https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5Patch
• https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31
• https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a
• https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286
• https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f
• https://git.kernel.org/stable/c/da8e1623a3028e1d8c75eec7898d94c6f17dce40