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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206affected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049affected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < b838add93e1dd98210482dc433768daaf752bdefaffected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < e50c589678e50f8d574612e473ca60ef45190896affected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < 5f394102ee27dbf051a4e283390cd8d1759daceaaffected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < ea372aab54903310756217d81610901a8e66cb7daffected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < ca0bdff4249a644f2ca7a49d410d95b8dacf1f72affected8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f to < bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166daffected
Linux Linux
Default version status: affected
3.18affected0 to < 3.18unaffected4.9.305 to ≤ 4.9.*unaffected4.14.270 to ≤ 4.14.*unaffected4.19.233 to ≤ 4.19.*unaffected5.4.183 to ≤ 5.4.*unaffected5.10.104 to ≤ 5.10.*unaffected5.15.27 to ≤ 5.15.*unaffected5.16.13 to ≤ 5.16.*unaffected5.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 ↗
- https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 ↗
- https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef ↗
- https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896 ↗
- https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea ↗
- https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d ↗
- https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 ↗
- https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d ↗