CVE-2026-45850
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-27 14:16:56.970000
Last modified
2026-11-06 16:18:47.293000
View original CVE JSON
{
"id": "CVE-2026-45850",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-05-27T14:16:56.970",
"lastModified": "2026-11-06T16:18:47.293",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: skip ipv6 extension headers for csum checks\n\nProtocol checksum validation fails for IPv6 if there are extension\nheaders before the protocol header. iph->len already contains its\noffset, so use it to fix the problem."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/netfilter/ipvs/ip_vs_proto_sctp.c",
"net/netfilter/ipvs/ip_vs_proto_tcp.c",
"net/netfilter/ipvs/ip_vs_proto_udp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "0bf92a90bf05ecafe52e92d5bc15a585021a64ac",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "768f665f3685b455ed686370ed7ccb852a125a3b",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "9aa7edc1347b98774e5167ca34e5b8aa6083bde7",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "d643c1ec80b70508f54dac12179e36920e2c00de",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "cdce1e797addab72393c0dfee31aaca41ef7d937",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4",
"versionType": "git",
"status": "affected"
},
{
"version": "0bbdd42b7efa66685b6d74701bcde3a596a3a59d",
"lessThan": "05cfe9863ef049d98141dc2969eefde72fb07625",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/netfilter/ipvs/ip_vs_proto_sctp.c",
"net/netfilter/ipvs/ip_vs_proto_tcp.c",
"net/netfilter/ipvs/ip_vs_proto_udp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.28",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.28",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.259",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.210",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.176",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.143",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.94",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.36",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.19.4",
"lessThanOrEqual": "6.19.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.0",
"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": "2026-11-06T15:42:22.349067Z",
"id": "CVE-2026-45850",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.28",
"versionEndExcluding": "5.10.259",
"matchCriteriaId": "5328D507-47BD-4272-A132-AF70B66CE883"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "5.15.210",
"matchCriteriaId": "5E938CDF-D1C4-43D0-98DC-9E11B6B55801"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.16",
"versionEndExcluding": "6.1.176",
"matchCriteriaId": "C4446623-5F2B-4DD8-8666-9FAAC285A757"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2",
"versionEndExcluding": "6.6.143",
"matchCriteriaId": "9062F1CD-CAD6-4EA2-A73F-C06D4A887B8C"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.7",
"versionEndExcluding": "6.12.94",
"matchCriteriaId": "85421C0C-ABDE-4357-971C-67F9087DE1B9"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.18.36",
"matchCriteriaId": "389025D2-958D-41BD-BD96-70ED1033A9F3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.19",
"versionEndExcluding": "6.19.4",
"matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de",
"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"
}
]
}