{"id":"CVE-2021-47503","state":"PUBLISHED","title":"scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()\n\nCalling scsi_remove_host() before scsi_add_host() results in a crash:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000108\n RIP: 0010:device_del+0x63/0x440\n Call Trace:\n  device_unregister+0x17/0x60\n  scsi_remove_host+0xee/0x2a0\n  pm8001_pci_probe+0x6ef/0x1b90 [pm80xx]\n  local_pci_probe+0x3f/0x90\n\nWe cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host()\nhas not been called yet at that point in time.\n\nFunction call tree:\n\n  pm8001_pci_probe()\n  |\n  `- pm8001_pci_alloc()\n  |  |\n  |  `- pm8001_alloc()\n  |     |\n  |     `- scsi_remove_host()\n  |\n  `- scsi_add_host()","publishedAt":"2024-05-24T15:01:50.358Z","updatedAt":"2026-05-11T13:55:54.579Z","severity":{"score":6.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/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":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add","versionType":"git"},{"version":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"f8dccc1bdea7e21b5ec06c957aef8831c772661c","versionType":"git"},{"version":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"653926205741add87a6cf452e21950eebc6ac10b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/pm8001/pm8001_init.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.85","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.8","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/pm8001/pm8001_init.c"]}],"references":["https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add","https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c","https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47503.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47503","state":"PUBLISHED","datePublished":"2024-05-24T15:01:50.358Z","dateUpdated":"2026-05-11T13:55:54.579Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-22T06:20:56.205Z"},"containers":{"cna":{"title":"scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()\n\nCalling scsi_remove_host() before scsi_add_host() results in a crash:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000108\n RIP: 0010:device_del+0x63/0x440\n Call Trace:\n  device_unregister+0x17/0x60\n  scsi_remove_host+0xee/0x2a0\n  pm8001_pci_probe+0x6ef/0x1b90 [pm80xx]\n  local_pci_probe+0x3f/0x90\n\nWe cannot call scsi_remove_host() in pm8001_alloc() because scsi_add_host()\nhas not been called yet at that point in time.\n\nFunction call tree:\n\n  pm8001_pci_probe()\n  |\n  `- pm8001_pci_alloc()\n  |  |\n  |  `- pm8001_alloc()\n  |     |\n  |     `- scsi_remove_host()\n  |\n  `- scsi_add_host()"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add","versionType":"git"},{"version":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"f8dccc1bdea7e21b5ec06c957aef8831c772661c","versionType":"git"},{"version":"05c6c029a44d9f43715577e33e95eba87f44d285","status":"affected","lessThan":"653926205741add87a6cf452e21950eebc6ac10b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/pm8001/pm8001_init.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.85","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.8","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/pm8001/pm8001_init.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add"},{"url":"https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c"},{"url":"https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:55:54.579Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.85"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"05c6c029a44d","status":"affected","lessThan":"1e434d2687e8 ","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"05c6c029a44d","status":"affected","lessThan":"f8dccc1bdea7 ","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"f8dccc1bdea7 ","status":"affected","lessThan":"653926205741 ","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"5.10.85","status":"unaffected","lessThan":"5.11","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"5.15.8","status":"unaffected","lessThanOrEqual":"5.16","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"5.16","status":"unaffected"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"5.10","status":"affected"}],"cpes":["cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.2,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-05-28T15:53:11.089005Z","id":"CVE-2021-47503","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":"2024-06-06T19:58:15.985Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:39:59.785Z"}}]}}}