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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < da8e1623a3028e1d8c75eec7898d94c6f17dce40affected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < d31a12cee10bbc12b4b523a4709fd1fdee8b7d0faffected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 23acc565186ee27e788408cbd81b92730b6aaa3aaffected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 67cca9df4d17f2c824655d31195b2e75334ae286affected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 14645799ad5253a028cf662e2f9cd18a68f74b31affected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 29739ec197ed66535bc0b86f14ab66c5f4512138affected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 349c4cac6f54a81fc107589771f88136a2b20415affected
LinuxLinuxed3525eda4c4983fb8509e488de0a351788041ba < 9d724b34fbe13b71865ad0906a4be97571f19cf5affected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux5.10.260 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.93 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References