CVE-2026-23149
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl() Since GEM bo handles are u32 in the uapi and the internal implementation uses idr_alloc() which uses int ranges, passing a new handle larger than INT_MAX trivially triggers a kernel warning: idr_alloc(): ... if (WARN_ON_ONCE(start < 0)) return -EINVAL; ... Fix it by rejecting new handles above INT_MAX and at the same time make the end limit calculation more obvious by moving into int domain.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-02-14 16:15:55.023000
Last modified
2026-11-05 22:18:04.417000
View original CVE JSON
{
"id": "CVE-2026-23149",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-02-14T16:15:55.023",
"lastModified": "2026-11-05T22:18:04.417",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()\n\nSince GEM bo handles are u32 in the uapi and the internal implementation\nuses idr_alloc() which uses int ranges, passing a new handle larger than\nINT_MAX trivially triggers a kernel warning:\n\nidr_alloc():\n...\n\tif (WARN_ON_ONCE(start < 0))\n\t\treturn -EINVAL;\n...\n\nFix it by rejecting new handles above INT_MAX and at the same time make\nthe end limit calculation more obvious by moving into int domain."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm: No permitir que el espacio de usuario active advertencias del kernel en drm_gem_change_handle_ioctl()\n\nDado que los identificadores GEM bo son u32 en la uapi y la implementación interna utiliza idr_alloc() que usa rangos int, pasar un nuevo identificador mayor que INT_MAX desencadena trivialmente una advertencia del kernel:\n\nidr_alloc():\n...\n\tif (WARN_ON_ONCE(start < 0))\n\t\treturn -EINVAL;\n...\n\nSe soluciona rechazando los nuevos identificadores superiores a INT_MAX y al mismo tiempo haciendo más obvio el cálculo del límite final al moverlo al dominio int."
}
],
"affected": [
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"affectedData": [
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
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"id": "CVE-2026-23149",
"options": [
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{
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"role": "CISA Coordinator",
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"weaknesses": [
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"source": "[email protected]",
"type": "Primary",
"description": [
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"configurations": [
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