CVE-2026-46038
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: ns: Free the node during ctrl_cmd_bye()
A node sends the BYE packet when it is about to go down. So the nameserver should advertise the removal of the node to all remote and local observers and free the node finally. But currently, the nameserver doesn't free the node memory even after processing the BYE packet. This causes the node memory to leak.
Hence, remove the node from Xarray list and free the node memory during both success and failure case of ctrl_cmd_bye().
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
Referencias
- https://git.kernel.org/stable/c/076e4b162d6caba12c229e7f262df5b6881162b0
- https://git.kernel.org/stable/c/154fc7fe3f62c46891c3c4302f4b5b5391c932e6
- https://git.kernel.org/stable/c/25d580a46b079a7963ff024a5195e547baf12b64
- https://git.kernel.org/stable/c/65932f5102bb5377db36c8a4f0c28179a1967a9a
- https://git.kernel.org/stable/c/68efba36446a7774ea5b971257ade049272a07ac
- https://git.kernel.org/stable/c/6c9cca46acb6f22e63f015ea7b2ed6032d2badf5
- https://git.kernel.org/stable/c/a5a454f3364877b22f0e5a165df8b3702ff96ae7
- https://git.kernel.org/stable/c/ff78ed177a66763085e3214d6fbe13ca8f0b3f11
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-46038",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "6c9cca46acb6f22e63f015ea7b2ed6032d2badf5",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "a5a454f3364877b22f0e5a165df8b3702ff96ae7",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "25d580a46b079a7963ff024a5195e547baf12b64",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "ff78ed177a66763085e3214d6fbe13ca8f0b3f11",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "65932f5102bb5377db36c8a4f0c28179a1967a9a",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "154fc7fe3f62c46891c3c4302f4b5b5391c932e6",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "076e4b162d6caba12c229e7f262df5b6881162b0",
"versionType": "git"
},
{
"status": "affected",
"version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
"lessThan": "68efba36446a7774ea5b971257ade049272a07ac",
"versionType": "git"
}
],
"programFiles": [
"net/qrtr/ns.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/qrtr/ns.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-05-27T14:17:23.140",
"references": [
{
"url": "https://git.kernel.org/stable/c/076e4b162d6caba12c229e7f262df5b6881162b0",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/154fc7fe3f62c46891c3c4302f4b5b5391c932e6",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/25d580a46b079a7963ff024a5195e547baf12b64",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/65932f5102bb5377db36c8a4f0c28179a1967a9a",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/68efba36446a7774ea5b971257ade049272a07ac",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6c9cca46acb6f22e63f015ea7b2ed6032d2badf5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a5a454f3364877b22f0e5a165df8b3702ff96ae7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ff78ed177a66763085e3214d6fbe13ca8f0b3f11",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-401"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Free the node during ctrl_cmd_bye()\n\nA node sends the BYE packet when it is about to go down. So the nameserver\nshould advertise the removal of the node to all remote and local observers\nand free the node finally. But currently, the nameserver doesn't free the\nnode memory even after processing the BYE packet. This causes the node\nmemory to leak.\n\nHence, remove the node from Xarray list and free the node memory during\nboth success and failure case of ctrl_cmd_bye()."
}
],
"lastModified": "2026-06-19T13:16:32.183",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A990FD1C-7109-4DDB-A221-53FD00482C29",
"versionEndExcluding": "6.6.140",
"versionStartIncluding": "5.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789",
"versionEndExcluding": "6.12.86",
"versionStartIncluding": "6.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74",
"versionEndExcluding": "6.18.27",
"versionStartIncluding": "6.13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3",
"versionEndExcluding": "7.0.4",
"versionStartIncluding": "6.19"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}