CVE-2025-68733 (GCVE-0-2025-68733)
Vulnerability from cvelistv5 – Published: 2025-12-24 10:33 – Updated: 2026-05-11 21:52
VLAI
EPSS
VEX
Title
smack: fix bug: unprivileged task can create labels
Summary
In the Linux kernel, the following vulnerability has been resolved:
smack: fix bug: unprivileged task can create labels
If an unprivileged task is allowed to relabel itself
(/smack/relabel-self is not empty),
it can freely create new labels by writing their
names into own /proc/PID/attr/smack/current
This occurs because do_setattr() imports
the provided label in advance,
before checking "relabel-self" list.
This change ensures that the "relabel-self" list
is checked before importing the label.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
38416e53936ecf896948fdeffc36b76979117952 , < c80173233014a360c13fa5cc79d36bfe6e53a8ed
(git)
Affected: 38416e53936ecf896948fdeffc36b76979117952 , < 6b1e45e13546c9ea0b1d99097993ac0aafae90b1 (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < 4a7a7621619a366712fb9cefcb6e69f956c247ce (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < f8fd5491100f920847a3338d5fba22db19c72773 (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < ac9fce2efabad37c338aac86fbe100f77a080e59 (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < 64aa81250171b6bb6803e97ea7a5d73bfa061f6e (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < 60e8d49989410a7ade60f5dadfcd979c117d05c0 (git) Affected: 38416e53936ecf896948fdeffc36b76979117952 , < c147e13ea7fe9f118f8c9ba5e96cbd644b00d6b3 (git) |
guessed | |
| Linux | Linux |
Affected:
4.4
Unaffected: 0 , < 4.4 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"lessThan": "4.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.63",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.248",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.160",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.120",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.63",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.13",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.2",
"versionStartIncluding": "4.4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "4.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmack: fix bug: unprivileged task can create labels\n\nIf an unprivileged task is allowed to relabel itself\n(/smack/relabel-self is not empty),\nit can freely create new labels by writing their\nnames into own /proc/PID/attr/smack/current\n\nThis occurs because do_setattr() imports\nthe provided label in advance,\nbefore checking \"relabel-self\" list.\n\nThis change ensures that the \"relabel-self\" list\nis checked before importing the label."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:52:17.465Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c80173233014a360c13fa5cc79d36bfe6e53a8ed"
},
{
"url": "https://git.kernel.org/stable/c/6b1e45e13546c9ea0b1d99097993ac0aafae90b1"
},
{
"url": "https://git.kernel.org/stable/c/4a7a7621619a366712fb9cefcb6e69f956c247ce"
},
{
"url": "https://git.kernel.org/stable/c/f8fd5491100f920847a3338d5fba22db19c72773"
},
{
"url": "https://git.kernel.org/stable/c/ac9fce2efabad37c338aac86fbe100f77a080e59"
},
{
"url": "https://git.kernel.org/stable/c/64aa81250171b6bb6803e97ea7a5d73bfa061f6e"
},
{
"url": "https://git.kernel.org/stable/c/60e8d49989410a7ade60f5dadfcd979c117d05c0"
},
{
"url": "https://git.kernel.org/stable/c/c147e13ea7fe9f118f8c9ba5e96cbd644b00d6b3"
}
],
"title": "smack: fix bug: unprivileged task can create labels",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68733",
"datePublished": "2025-12-24T10:33:15.347Z",
"dateReserved": "2025-12-24T10:30:51.028Z",
"dateUpdated": "2026-05-11T21:52:17.465Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68733",
"date": "2026-11-01",
"epss": "0.00198",
"percentile": "0.096"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T02:39:17.000Z",
"cve": "CVE-2025-68733",
"id": "msrc_CVE-2025-68733",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "smack: fix bug: unprivileged task can create labels",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68733.json",
"version": "5"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"versionType": "git"
},
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"versionType": "git"
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"versionType": "git"
},
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{
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"lessThan": "4.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.63",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmack: fix bug: unprivileged task can create labels\n\nIf an unprivileged task is allowed to relabel itself\n(/smack/relabel-self is not empty),\nit can freely create new labels by writing their\nnames into own /proc/PID/attr/smack/current\n\nThis occurs because do_setattr() imports\nthe provided label in advance,\nbefore checking \"relabel-self\" list.\n\nThis change ensures that the \"relabel-self\" list\nis checked before importing the label."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nsmack: se corrige un error: una tarea sin privilegios puede crear etiquetas\n\nSi a una tarea sin privilegios se le permite reetiquetarse a s\u00ed misma\n(/smack/relabel-self no est\u00e1 vac\u00edo),\npuede crear libremente nuevas etiquetas escribiendo sus\nnombres en su propio /proc/PID/attr/smack/current\n\nEsto ocurre porque do_setattr() importa\nla etiqueta proporcionada de antemano,\nantes de verificar la lista \u0027relabel-self\u0027.\n\nEste cambio asegura que la lista \u0027relabel-self\u0027\nsea verificada antes de importar la etiqueta."
}
],
"id": "CVE-2025-68733",
"lastModified": "2026-10-13T11:10:00.203",
"metrics": {},
"published": "2025-12-24T11:16:02.600",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4a7a7621619a366712fb9cefcb6e69f956c247ce"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/60e8d49989410a7ade60f5dadfcd979c117d05c0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/64aa81250171b6bb6803e97ea7a5d73bfa061f6e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/6b1e45e13546c9ea0b1d99097993ac0aafae90b1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ac9fce2efabad37c338aac86fbe100f77a080e59"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c147e13ea7fe9f118f8c9ba5e96cbd644b00d6b3"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c80173233014a360c13fa5cc79d36bfe6e53a8ed"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f8fd5491100f920847a3338d5fba22db19c72773"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-30T10:13:51+00:00",
"cve": "CVE-2025-68733",
"id": "CVE-2025-68733",
"initial_release_date": "2025-12-24T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: smack: fix bug: unprivileged task can create labels",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68733.json",
"version": "3"
}
}
}
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