CVE-2026-23302
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net: annotate data-races around sk->sk_{data_ready,write_space} skmsg (and probably other layers) are changing these pointers while other cpus might read them concurrently. Add corresponding READ_ONCE()/WRITE_ONCE() annotations for UDP, TCP and AF_UNIX.
Severity
MEDIUM
CVSS score
4.7
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-03-25 11:16:25.923000
Last modified
2026-11-05 22:18:13.267000
View original CVE JSON
{
"id": "CVE-2026-23302",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-03-25T11:16:25.923",
"lastModified": "2026-11-05T22:18:13.267",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: annotate data-races around sk->sk_{data_ready,write_space}\n\nskmsg (and probably other layers) are changing these pointers\nwhile other cpus might read them concurrently.\n\nAdd corresponding READ_ONCE()/WRITE_ONCE() annotations\nfor UDP, TCP and AF_UNIX."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: anotar condiciones de carrera de datos alrededor de sk->sk_{data_ready,write_space}\n\nskmsg (y probablemente otras capas) están cambiando estos punteros mientras otras CPUs podrían leerlos concurrentemente.\n\nAñadir las correspondientes anotaciones READ_ONCE()/WRITE_ONCE() para UDP, TCP y AF_UNIX."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/core/skmsg.c",
"net/ipv4/tcp.c",
"net/ipv4/tcp_bpf.c",
"net/ipv4/tcp_input.c",
"net/ipv4/tcp_minisocks.c",
"net/ipv4/udp.c",
"net/ipv4/udp_bpf.c",
"net/unix/af_unix.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
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"versionType": "git",
"status": "affected"
},
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"status": "affected"
},
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"versionType": "git",
"status": "affected"
}
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},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/core/skmsg.c",
"net/ipv4/tcp.c",
"net/ipv4/tcp_bpf.c",
"net/ipv4/tcp_input.c",
"net/ipv4/tcp_minisocks.c",
"net/ipv4/udp.c",
"net/ipv4/udp_bpf.c",
"net/unix/af_unix.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.20",
"status": "affected"
},
{
"version": "0",
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"versionType": "semver",
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},
{
"version": "6.1.177",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.136",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.82",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.17",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.19.7",
"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:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T21:26:09.613171Z",
"id": "CVE-2026-23302",
"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-362"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.20",
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"matchCriteriaId": "6508946E-134B-4941-9550-4B3C2C1D16DD"
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"matchCriteriaId": "02904CAE-71D2-45B3-9EC3-F6A9D18B6307"
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"matchCriteriaId": "A5E006E4-59C7-43C1-9231-62A72219F2BA"
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{
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"matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"
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"references": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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"tags": [
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{
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{
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}