275 lines
14 KiB
JSON
275 lines
14 KiB
JSON
{
|
||
"dataType": "CVE_RECORD",
|
||
"dataVersion": "5.2",
|
||
"cveMetadata": {
|
||
"cveId": "CVE-2021-47159",
|
||
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
||
"state": "PUBLISHED",
|
||
"assignerShortName": "Linux",
|
||
"dateReserved": "2024-03-25T09:12:14.109Z",
|
||
"datePublished": "2024-03-25T09:16:13.815Z",
|
||
"dateUpdated": "2026-08-05T08:46:23.974Z"
|
||
},
|
||
"containers": {
|
||
"cna": {
|
||
"providerMetadata": {
|
||
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
||
"shortName": "Linux",
|
||
"dateUpdated": "2026-08-05T08:46:23.974Z"
|
||
},
|
||
"descriptions": [
|
||
{
|
||
"lang": "en",
|
||
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix a crash if ->get_sset_count() fails\n\nIf ds->ops->get_sset_count() fails then it \"count\" is a negative error\ncode such as -EOPNOTSUPP. Because \"i\" is an unsigned int, the negative\nerror code is type promoted to a very high value and the loop will\ncorrupt memory until the system crashes.\n\nFix this by checking for error codes and changing the type of \"i\" to\njust int."
|
||
}
|
||
],
|
||
"metrics": [
|
||
{
|
||
"cvssV3_1": {
|
||
"version": "3.1",
|
||
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
||
"baseScore": 7.8,
|
||
"baseSeverity": "HIGH"
|
||
},
|
||
"scenarios": [
|
||
{
|
||
"lang": "en",
|
||
"value": "AV:L - The vulnerable path is dsa_master_get_strings, reached only through local ethtool ioctls (SIOCETHTOOL/ETHTOOL_GSTRINGS) or ethnl STRSET_GET on a DSA master netdev, not by processing remote or adjacent-network packets.\nAC:L - An attacker who can open a datagram socket and issue ETHTOOL_GSTRINGS against the DSA master reliably drives the get_strings path; when get_sset_count returns a negative error while the combined sset count stays positive (master stats offsetting the DSA error), the OOB write loop runs deterministically with no race to win.\nPR:L - ETHTOOL_GSTRINGS is explicitly exempt from the CAP_NET_ADMIN check in dev_ethtool, so any unprivileged local user in the netns that can see the DSA master interface can trigger the bug without elevated capabilities.\nUI:N - The attacker directly issues the ethtool/netlink request; no separate victim action such as mounting a filesystem or opening a malicious file is required.\nS:U - Impact is confined to the host kernel that owns the DSA master netdev; there is no VM escape, IOMMU bypass, or other cross-authority boundary crossing.\nC:H - The unbounded memmove loop reads and rewrites memory far beyond the vzalloc’d string buffer, corrupting adjacent kernel objects; that OOB memory-corruption primitive can be leveraged for confidentiality compromise under worst-case exploitation.\nI:H - The same loop performs an unbounded out-of-bounds write (memmove plus a fixed port-prefix memcpy every ETH_GSTRING_LEN bytes), which is a classic heap/vmalloc corruption primitive exploitable for integrity compromise and control-flow hijacking.\nA:H - The multi-billion-iteration OOB write inevitably corrupts kernel memory and causes an oops/panic, producing a full denial of service of the DSA host."
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"affected": [
|
||
{
|
||
"product": "Linux",
|
||
"vendor": "Linux",
|
||
"defaultStatus": "unaffected",
|
||
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
||
"programFiles": [
|
||
"net/dsa/master.c"
|
||
],
|
||
"versions": [
|
||
{
|
||
"version": "badf3ada60ab8f76f9488dc8f5c0c57f70682f5a",
|
||
"lessThan": "0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "badf3ada60ab8f76f9488dc8f5c0c57f70682f5a",
|
||
"lessThan": "ce5355f140a7987011388c7e30c4f8fbe180d3e8",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "badf3ada60ab8f76f9488dc8f5c0c57f70682f5a",
|
||
"lessThan": "caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "badf3ada60ab8f76f9488dc8f5c0c57f70682f5a",
|
||
"lessThan": "7b22466648a4f8e3e94f57ca428d1531866d1373",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "badf3ada60ab8f76f9488dc8f5c0c57f70682f5a",
|
||
"lessThan": "a269333fa5c0c8e53c92b5a28a6076a28cde3e83",
|
||
"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/dsa/master.c"
|
||
],
|
||
"versions": [
|
||
{
|
||
"version": "4.7",
|
||
"status": "affected"
|
||
},
|
||
{
|
||
"version": "0",
|
||
"lessThan": "4.7",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "4.19.193",
|
||
"lessThanOrEqual": "4.19.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.4.124",
|
||
"lessThanOrEqual": "5.4.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.10.42",
|
||
"lessThanOrEqual": "5.10.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.12.9",
|
||
"lessThanOrEqual": "5.12.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.13",
|
||
"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": "4.7",
|
||
"versionEndExcluding": "4.19.193"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "4.7",
|
||
"versionEndExcluding": "5.4.124"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "4.7",
|
||
"versionEndExcluding": "5.10.42"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "4.7",
|
||
"versionEndExcluding": "5.12.9"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "4.7",
|
||
"versionEndExcluding": "5.13"
|
||
}
|
||
]
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"references": [
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83"
|
||
}
|
||
],
|
||
"title": "net: dsa: fix a crash if ->get_sset_count() fails",
|
||
"x_generator": {
|
||
"engine": "bippy-1.2.0"
|
||
}
|
||
},
|
||
"adp": [
|
||
{
|
||
"providerMetadata": {
|
||
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
||
"shortName": "CVE",
|
||
"dateUpdated": "2024-08-04T05:24:39.963Z"
|
||
},
|
||
"title": "CVE Program Container",
|
||
"references": [
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37",
|
||
"tags": [
|
||
"x_transferred"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8",
|
||
"tags": [
|
||
"x_transferred"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6",
|
||
"tags": [
|
||
"x_transferred"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373",
|
||
"tags": [
|
||
"x_transferred"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83",
|
||
"tags": [
|
||
"x_transferred"
|
||
]
|
||
}
|
||
]
|
||
},
|
||
{
|
||
"metrics": [
|
||
{
|
||
"other": {
|
||
"type": "ssvc",
|
||
"content": {
|
||
"id": "CVE-2021-47159",
|
||
"role": "CISA Coordinator",
|
||
"options": [
|
||
{
|
||
"Exploitation": "none"
|
||
},
|
||
{
|
||
"Automatable": "no"
|
||
},
|
||
{
|
||
"Technical Impact": "partial"
|
||
}
|
||
],
|
||
"version": "2.0.3",
|
||
"timestamp": "2024-09-10T15:54:44.376467Z"
|
||
}
|
||
}
|
||
}
|
||
],
|
||
"title": "CISA ADP Vulnrichment",
|
||
"providerMetadata": {
|
||
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
||
"shortName": "CISA-ADP",
|
||
"dateUpdated": "2024-09-11T17:33:54.672Z"
|
||
}
|
||
}
|
||
]
|
||
}
|
||
} |