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vuln-cve/data/2021/47xxx/CVE-2021-47333.json
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{
"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": [
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"tags": [
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}