CVE-2026-46161
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies setup_geo() extracts near_copies (nc) and far_copies (fc) from the user-provided layout parameter without checking for zero. When fc=0 with the "improved" far set layout selected, 'geo->far_set_size = disks / fc' triggers a divide-by-zero. Validate nc and fc immediately after extraction, returning -1 if either is zero.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-28 10:16:31.770000
Last modified
2026-11-06 17:17:41.563000
View original CVE JSON
{
"id": "CVE-2026-46161",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-05-28T10:16:31.770",
"lastModified": "2026-11-06T17:17:41.563",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix divide-by-zero in setup_geo() with zero far_copies\n\nsetup_geo() extracts near_copies (nc) and far_copies (fc) from the\nuser-provided layout parameter without checking for zero. When fc=0\nwith the \"improved\" far set layout selected, 'geo->far_set_size =\ndisks / fc' triggers a divide-by-zero.\n\nValidate nc and fc immediately after extraction, returning -1 if\neither is zero."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/md/raid10.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "0b43a70394ce492274e67463326be03e0a9897c5",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "c716ab3034f84f8a6c226814247b8c5ac9f95da1",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "553e32adfa1a96b217651139a3f8c3b92b9984ac",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "4af2e558e6fdfb972c61350653fd55d1f62b60a5",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "913d556e4bd1b56ed822815655b82c7bb54edc51",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "f9ddb621b2325eb69c95692958daf2bab4dea2c4",
"versionType": "git",
"status": "affected"
},
{
"version": "475901aff15841fb0a81e7546517407779a9b061",
"lessThan": "9aa6d860b0930e2f72795665c42c44252a558a0c",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/md/raid10.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "3.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.9",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.258",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.209",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.175",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.140",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.88",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.30",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.0.7",
"lessThanOrEqual": "7.0.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"affectedData": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"lessThan": "*",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-06T16:10:35.995977Z",
"id": "CVE-2026-46161",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-369"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.9.1",
"versionEndExcluding": "5.10.258",
"matchCriteriaId": "0D8E6DE7-D158-4E61-8060-C94CB18E58CF"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "5.15.209",
"matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.16",
"versionEndExcluding": "6.1.175",
"matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2",
"versionEndExcluding": "6.6.140",
"matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.7",
"versionEndExcluding": "6.12.88",
"matchCriteriaId": "5AFBE0EC-CCDF-4207-AE92-ABF958125CA4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.18.30",
"matchCriteriaId": "BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.19",
"versionEndExcluding": "7.0.7",
"matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:-:*:*:*:*:*:*",
"matchCriteriaId": "526A1838-B777-4270-82B2-E8BC398CB046"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc2:*:*:*:*:*:*",
"matchCriteriaId": "08C04619-89A2-4B15-82A2-48BCC662C1F1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*",
"matchCriteriaId": "5B039196-7159-476C-876A-C61242CC41DA"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*",
"matchCriteriaId": "3A9E0457-53C9-44DD-ACFB-31EE1D1E060E"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*",
"matchCriteriaId": "BEE406E7-87BA-44BA-BF61-673E6CC44A2F"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc6:*:*:*:*:*:*",
"matchCriteriaId": "29FBA173-658F-45DC-8205-934CACD67166"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc7:*:*:*:*:*:*",
"matchCriteriaId": "139700F0-BA32-40CF-B9DF-C9C450384FDE"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:3.9:rc8:*:*:*:*:*:*",
"matchCriteriaId": "7FC798CC-23F1-42C3-BA27-187C90B4E43C"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
"matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/0b43a70394ce492274e67463326be03e0a9897c5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/4af2e558e6fdfb972c61350653fd55d1f62b60a5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/553e32adfa1a96b217651139a3f8c3b92b9984ac",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/913d556e4bd1b56ed822815655b82c7bb54edc51",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/9aa6d860b0930e2f72795665c42c44252a558a0c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/9d8e03b9a2b1e8ce5c198bf3a409a629f4d02cda",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/c716ab3034f84f8a6c226814247b8c5ac9f95da1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/f9ddb621b2325eb69c95692958daf2bab4dea2c4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
]
}