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vuln-cve/data/2026/90xxx/CVE-2026-90221.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-90221",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-11T19:38:34.793Z",
"datePublished": "2026-09-17T16:07:32.070Z",
"dateUpdated": "2026-10-19T08:59:57.703Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T08:59:57.703Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing\n\nnci_core_init_rsp_packet_v1() and nci_core_init_rsp_packet_v2() parse\nthe CORE_INIT_RSP packet without validating that the skb contains\nenough data. A malformed response (e.g. injected via virtual_ncidev)\ncan declare a large num_supported_rf_interfaces while providing\ninsufficient data, causing reads of uninitialized slab memory. This\nis later used in nci_init_complete_req(), triggering a KMSAN\nuninit-value warning.\n\nAdd skb length checks before accessing packet fields:\n- Validate the skb has at least 1 byte for the status field.\n- Validate the skb can hold the fixed-size header before parsing.\n- In v2, bounds-check each variable-length rf_interface entry and its\n extension parameters within the parsing loop.\n- In v1, verify the skb is large enough for both the variable-length\n rf_interfaces array and the trailing rsp_2 structure."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/nfc/nci/rsp.c"
],
"versions": [
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "baed3fdf6ed2195c56f25ae18a086b938dcd3983",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "2f434478771a4ebdd535033561c0590bcde39753",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "4f0483bbcdaccc9d4aee30df7351863334cecfa7",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "7d44b897bff84edcd4814899314d661ad4956a8e",
"status": "affected",
"versionType": "git"
},
{
"version": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212",
"lessThan": "d56575a2595ee1f597f39e8a1cfb67ed3501678d",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/nfc/nci/rsp.c"
],
"versions": [
{
"version": "5.11",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.11",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.221",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.188",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.157",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.110",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.52",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.6",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"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": "5.11",
"versionEndExcluding": "5.15.221"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "6.1.188"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "6.6.157"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "6.12.110"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "6.18.52"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "7.2.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/baed3fdf6ed2195c56f25ae18a086b938dcd3983"
},
{
"url": "https://git.kernel.org/stable/c/2f434478771a4ebdd535033561c0590bcde39753"
},
{
"url": "https://git.kernel.org/stable/c/5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31"
},
{
"url": "https://git.kernel.org/stable/c/bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e"
},
{
"url": "https://git.kernel.org/stable/c/4f0483bbcdaccc9d4aee30df7351863334cecfa7"
},
{
"url": "https://git.kernel.org/stable/c/7d44b897bff84edcd4814899314d661ad4956a8e"
},
{
"url": "https://git.kernel.org/stable/c/d56575a2595ee1f597f39e8a1cfb67ed3501678d"
}
],
"title": "nfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}