CVEvulnerability
CVE-2026-43219
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-05-06
- Last modified
- 2026-07-04
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Affected configurations
• linux linux kernel (>= 5.5 < 6.18.16)
• linux linux kernel (>= 6.19 < 6.19.6)
References
- https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31 git.kernel.org
- https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a git.kernel.org
- https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138 Patch
- https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415 Patch
- https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286 git.kernel.org
- https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5 Patch
- https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f git.kernel.org
- https://git.kernel.org/stable/c/da8e1623a3028e1d8c75eec7898d94c6f17dce40 git.kernel.org