Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling Move the freeing of the dummy net_device from mtk_free_dev() to mtk_remove(). Previously, if alloc_netdev_dummy() failed in mtk_probe(), eth->dummy_dev would be NULL. The error path would then call mtk_free_dev(), which in turn called free_netdev() assuming dummy_dev was allocated (but it was not), potentially causing a NULL pointer dereference. By moving free_netdev() to mtk_remove(), we ensure it's only called when mtk_probe() has succeeded and dummy_dev is fully allocated. This addresses a potential NULL pointer dereference detected by Smatch[1].
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d5d57501f543f48df8b76a4af59def9a894b396f before 81e82340170ae82f8cc28e76c13a0069c0d47cb4; affected b209bd6d0bffb8991aba568e2d9a892c86a1a43c before af6bd5c9901b13a26eaf4d57d97a813297791596; affected b209bd6d0bffb8991aba568e2d9a892c86a1a43c before 16f3a28cf5f876a7f3550d8f4c870a7b41bcfaef |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.10.3 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/81e82340170ae82f8cc28e76c13a0069c0d47cb4
- https://git.kernel.org/stable/c/af6bd5c9901b13a26eaf4d57d97a813297791596
- https://git.kernel.org/stable/c/16f3a28cf5f876a7f3550d8f4c870a7b41bcfaef
ADP enrichment
No English description supplied.
No references supplied.