fkie_cve-2025-37863
Vulnerability from fkie_nvd
Published
2025-05-09 07:16
Modified
2025-11-12 20:13
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ovl: don't allow datadir only
In theory overlayfs could support upper layer directly referring to a data
layer, but there's no current use case for this.
Originally, when data-only layers were introduced, this wasn't allowed,
only introduced by the "datadir+" feature, but without actually handling
this case, resulting in an Oops.
Fix by disallowing datadir without lowerdir.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.15 | |
| linux | linux_kernel | 6.15 |
{
"configurations": [
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"nodes": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F1ECACC5-D719-4DD5-9E3F-A7A06FEF17D6",
"versionEndExcluding": "6.6.88",
"versionStartIncluding": "6.6.23",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\novl: don\u0027t allow datadir only\n\nIn theory overlayfs could support upper layer directly referring to a data\nlayer, but there\u0027s no current use case for this.\n\nOriginally, when data-only layers were introduced, this wasn\u0027t allowed,\nonly introduced by the \"datadir+\" feature, but without actually handling\nthis case, resulting in an Oops.\n\nFix by disallowing datadir without lowerdir."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ovl: no se permite solo datadir. En teor\u00eda, overlayfs podr\u00eda permitir que la capa superior haga referencia directa a una capa de datos, pero actualmente no existe un caso pr\u00e1ctico para esto. Originalmente, cuando se introdujeron las capas de solo datos, esto no se permit\u00eda; solo se introdujo mediante la funci\u00f3n \"datadir+\", pero sin gestionar este caso, lo que resultaba en un error. Se soluciona deshabilitando datadir sin lowerdir."
}
],
"id": "CVE-2025-37863",
"lastModified": "2025-11-12T20:13:11.693",
"metrics": {
"cvssMetricV31": [
{
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
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"published": "2025-05-09T07:16:07.317",
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"vulnStatus": "Analyzed",
"weaknesses": [
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"value": "NVD-CWE-noinfo"
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"type": "Primary"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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