CVE-2022-48908
net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < b838add93e1dd98210482dc433768daaf752bdef
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < e50c589678e50f8d574612e473ca60ef45190896
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < 5f394102ee27dbf051a4e283390cd8d1759dacea
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < ea372aab54903310756217d81610901a8e66cb7d
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < ca0bdff4249a644f2ca7a49d410d95b8dacf1f72
- affected 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f – < bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d
- affected 3.18
- unaffected < 3.18
- unaffected 4.9.305 – ≤ 4.9.*
- unaffected 4.14.270 – ≤ 4.14.*
- unaffected 4.19.233 – ≤ 4.19.*
- unaffected 5.4.183 – ≤ 5.4.*
- unaffected 5.10.104 – ≤ 5.10.*
- unaffected 5.15.27 – ≤ 5.15.*
- unaffected 5.16.13 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (8)
- https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 (opens in a new tab)
- https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 (opens in a new tab)
- https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef (opens in a new tab)
- https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896 (opens in a new tab)
- https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea (opens in a new tab)
- https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d (opens in a new tab)
- https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 (opens in a new tab)
- https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-48908)Record last updated .