{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47333", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.975Z", "datePublished": "2024-05-21T14:35:43.760Z", "dateUpdated": "2026-05-11T13:52:36.036Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:52:36.036Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: alcor_pci: fix null-ptr-deref when there is no PCI bridge\n\nThere is an issue with the ASPM(optional) capability checking function.\nA device might be attached to root complex directly, in this case,\nbus->self(bridge) will be NULL, thus priv->parent_pdev is NULL.\nSince alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's\nASPM capability and populate parent_cap_off, which will be used later by\nalcor_pci_aspm_ctrl() to dynamically turn on/off device, what we can do\nhere is to avoid checking the capability if we are on the root complex.\nThis will make pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply\nreturn when bring called, effectively disable ASPM for the device.\n\n[ 1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0\n[ 1.248731] RIP: 0010:pci_read_config_byte+0x5/0x40\n[ 1.253998] Call Trace:\n[ 1.254131] ? alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci]\n[ 1.254476] alcor_pci_probe+0x169/0x2d5 [alcor_pci]" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/misc/cardreader/alcor_pci.c" ], "versions": [ { "version": "4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d", "lessThan": "d2639ffdcad463b358b6bef8645ff81715daffcb", "status": "affected", "versionType": "git" }, { "version": "4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d", "lessThan": "58f69684ba03e5b0e0a3ae844a845280c0f06309", "status": "affected", "versionType": "git" }, { "version": "4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d", "lessThan": "717cf5ae52322ddbdf3ac2c584b34c5970b0d174", "status": "affected", "versionType": "git" }, { "version": "4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d", "lessThan": "09d154990ca82d14aed2b72796f6c8845e2e605d", "status": "affected", "versionType": "git" }, { "version": "4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d", "lessThan": "3ce3e45cc333da707d4d6eb433574b990bcc26f5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/misc/cardreader/alcor_pci.c" ], "versions": [ { "version": "5.0", "status": "affected" }, { "version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.134", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.52", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.19", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13.4", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.4.134" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.10.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.12.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.13.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d2639ffdcad463b358b6bef8645ff81715daffcb" }, { "url": "https://git.kernel.org/stable/c/58f69684ba03e5b0e0a3ae844a845280c0f06309" }, { "url": "https://git.kernel.org/stable/c/717cf5ae52322ddbdf3ac2c584b34c5970b0d174" }, { "url": "https://git.kernel.org/stable/c/09d154990ca82d14aed2b72796f6c8845e2e605d" }, { "url": "https://git.kernel.org/stable/c/3ce3e45cc333da707d4d6eb433574b990bcc26f5" } ], "title": "misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "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": "2024-05-29T18:10:17.261528Z", "id": "CVE-2021-47333", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-31T15:28:29.646Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.457Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/d2639ffdcad463b358b6bef8645ff81715daffcb", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/58f69684ba03e5b0e0a3ae844a845280c0f06309", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/717cf5ae52322ddbdf3ac2c584b34c5970b0d174", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/09d154990ca82d14aed2b72796f6c8845e2e605d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/3ce3e45cc333da707d4d6eb433574b990bcc26f5", "tags": [ "x_transferred" ] } ] } ] } }