CVE-2026-46003
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the total number of nodes Currently, the nameserver doesn't limit the number of nodes it handles. This can be an attack vector if a malicious client starts registering random nodes, leading to memory exhaustion. Hence, limit the maximum number of nodes to 64. Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-27 14:17:18.010000
Last modified
2026-11-06 17:17:29.743000
View original CVE JSON
{
"id": "CVE-2026-46003",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-05-27T14:17:18.010",
"lastModified": "2026-11-06T17:17:29.743",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the total number of nodes\n\nCurrently, the nameserver doesn't limit the number of nodes it handles.\nThis can be an attack vector if a malicious client starts registering\nrandom nodes, leading to memory exhaustion.\n\nHence, limit the maximum number of nodes to 64. Note that, limit of 64 is\nchosen based on the current platform requirements. If requirement changes\nin the future, this limit can be increased."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/qrtr/ns.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "b703ee903b24974aca4bde99c7d25d66309d35dd",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "823310645065bd49666e84af689fa95192819f55",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "ed29887286aba96d1930f4ddb9f235f6b421073c",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "4c46413661431aa60fb134cd4ecdf8beaa39f824",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "5cf6d5e5e3b804a44692fbf548a5179442e2e923",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "8022876894d09ae485b499058c3357da683bcc5d",
"versionType": "git",
"status": "affected"
},
{
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "27d5e84e810b0849d08b9aec68e48570461ce313",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/qrtr/ns.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.7",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.7",
"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": "6.6.140",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.86",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.27",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.0.4",
"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": "2026-11-06T16:04:44.195226Z",
"id": "CVE-2026-46003",
"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": "5.7",
"versionEndExcluding": "6.6.140",
"matchCriteriaId": "A990FD1C-7109-4DDB-A221-53FD00482C29"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.7",
"versionEndExcluding": "6.12.86",
"matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.13",
"versionEndExcluding": "6.18.27",
"matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.19",
"versionEndExcluding": "7.0.4",
"matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/27d5e84e810b0849d08b9aec68e48570461ce313",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/4665a29c08e1b36bc9db4814f9dde3d23e8fd1b0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/4c46413661431aa60fb134cd4ecdf8beaa39f824",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/5cf6d5e5e3b804a44692fbf548a5179442e2e923",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/8022876894d09ae485b499058c3357da683bcc5d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/823310645065bd49666e84af689fa95192819f55",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b703ee903b24974aca4bde99c7d25d66309d35dd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ed29887286aba96d1930f4ddb9f235f6b421073c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
]
}