cve-2024-42282
Vulnerability from cvelistv5
Published
2024-08-17 09:08
Modified
2024-12-19 09:15
Severity ?
Summary
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].
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/16f3a28cf5f876a7f3550d8f4c870a7b41bcfaefPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af6bd5c9901b13a26eaf4d57d97a813297791596Patch
Impacted products
Vendor Product Version
Linux Linux Version: b209bd6d0bffb8991aba568e2d9a892c86a1a43c
Version: b209bd6d0bffb8991aba568e2d9a892c86a1a43c
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   Linux Linux Version: 6.10
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