Description
In the Linux kernel, the following vulnerability has been resolved:
net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices.
The following log reveals it:
[ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [ 3.975181] Call Trace: [ 3.976208] local_pci_probe+0x13f/0x210 [ 3.977248] pci_device_probe+0x34c/0x6d0 [ 3.977255] ? pci_uevent+0x470/0x470 [ 3.978265] really_probe+0x24c/0x8d0 [ 3.978273] __driver_probe_device+0x1b3/0x280 [ 3.979288] driver_probe_device+0x50/0x370
Fix this by checking whether the 'ci' is a null pointer first.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < b838add93e1dd98210482dc433768daaf752bdef; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < e50c589678e50f8d574612e473ca60ef45190896; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < 5f394102ee27dbf051a4e283390cd8d1759dacea; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < ea372aab54903310756217d81610901a8e66cb7d; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < ca0bdff4249a644f2ca7a49d410d95b8dacf1f72; >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d |
| Linux | Linux | 3.18 |
References
- https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759daceaPatch
- https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206Patch
- https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049Patch
- https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdefPatch
- https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166dPatch
- https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72Patch
- https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896Patch
- https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7dPatch
Timeline
- Published
- Aug 22, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified