{"id":"CVE-2022-48908","state":"PUBLISHED","title":"net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()\n\nDuring driver initialization, the pointer of card info, i.e. the\nvariable 'ci' is required. However, the definition of\n'com20020pci_id_table' reveals that this field is empty for some\ndevices, which will cause null pointer dereference when initializing\nthese devices.\n\nThe following log reveals it:\n\n[    3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n[    3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]\n[    3.975181] Call Trace:\n[    3.976208]  local_pci_probe+0x13f/0x210\n[    3.977248]  pci_device_probe+0x34c/0x6d0\n[    3.977255]  ? pci_uevent+0x470/0x470\n[    3.978265]  really_probe+0x24c/0x8d0\n[    3.978273]  __driver_probe_device+0x1b3/0x280\n[    3.979288]  driver_probe_device+0x50/0x370\n\nFix this by checking whether the 'ci' is a null pointer first.","publishedAt":"2024-08-22T01:30:49.441Z","updatedAt":"2026-05-11T18:49:29.700Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"8e3bc7c5bbf87e86e9cd652ca2a9166942d86206","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"b838add93e1dd98210482dc433768daaf752bdef","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"e50c589678e50f8d574612e473ca60ef45190896","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"5f394102ee27dbf051a4e283390cd8d1759dacea","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"ea372aab54903310756217d81610901a8e66cb7d","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"ca0bdff4249a644f2ca7a49d410d95b8dacf1f72","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/arcnet/com20020-pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.18","versionType":"semver"},{"version":"4.9.305","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.270","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.233","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.183","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.104","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.27","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.13","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/arcnet/com20020-pci.c"]}],"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"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/48xxx/CVE-2022-48908.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48908","state":"PUBLISHED","datePublished":"2024-08-22T01:30:49.441Z","dateUpdated":"2026-05-11T18:49:29.700Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T06:06:23.293Z"},"containers":{"cna":{"title":"net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()\n\nDuring driver initialization, the pointer of card info, i.e. the\nvariable 'ci' is required. However, the definition of\n'com20020pci_id_table' reveals that this field is empty for some\ndevices, which will cause null pointer dereference when initializing\nthese devices.\n\nThe following log reveals it:\n\n[    3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n[    3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]\n[    3.975181] Call Trace:\n[    3.976208]  local_pci_probe+0x13f/0x210\n[    3.977248]  pci_device_probe+0x34c/0x6d0\n[    3.977255]  ? pci_uevent+0x470/0x470\n[    3.978265]  really_probe+0x24c/0x8d0\n[    3.978273]  __driver_probe_device+0x1b3/0x280\n[    3.979288]  driver_probe_device+0x50/0x370\n\nFix this by checking whether the 'ci' is a null pointer first."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"8e3bc7c5bbf87e86e9cd652ca2a9166942d86206","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"b838add93e1dd98210482dc433768daaf752bdef","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"e50c589678e50f8d574612e473ca60ef45190896","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"5f394102ee27dbf051a4e283390cd8d1759dacea","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"ea372aab54903310756217d81610901a8e66cb7d","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"ca0bdff4249a644f2ca7a49d410d95b8dacf1f72","versionType":"git"},{"version":"8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f","status":"affected","lessThan":"bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/arcnet/com20020-pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.18","versionType":"semver"},{"version":"4.9.305","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.270","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.233","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.183","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.104","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.27","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.13","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/arcnet/com20020-pci.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206"},{"url":"https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049"},{"url":"https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef"},{"url":"https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896"},{"url":"https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea"},{"url":"https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d"},{"url":"https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72"},{"url":"https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:49:29.700Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.9.305"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.14.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.19.233"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.4.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.10.104"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.15.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.16.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.17"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-09-10T15:34:10.946683Z","id":"CVE-2022-48908","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","type":"CWE","lang":"en","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T17:25:00.573Z"}}]}}}