CVE-2026-46311
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: fix access to stale wptr mapping Use drm_exec to take both locks i.e vm root bo and wptr_obj bo to access the mapping data properly. This fixes the security issue of unmap the wptr_obj while a queue creation is in progress and passing other bo at same address. (cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-06-08 17:16:50.053000
Last modified
2026-10-19 20:18:41.920000
View original CVE JSON
{
"id": "CVE-2026-46311",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-06-08T17:16:50.053",
"lastModified": "2026-10-19T20:18:41.920",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/userq: fix access to stale wptr mapping\n\nUse drm_exec to take both locks i.e vm root bo and\nwptr_obj bo to access the mapping data properly.\n\nThis fixes the security issue of unmap the wptr_obj while\na queue creation is in progress and passing other\nbo at same address.\n\n(cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/amdgpu/userq: corrige el acceso a un mapeo wptr obsoleto\n\nUsa drm_exec para tomar ambos bloqueos, es decir, el bo raíz de la vm y el bo wptr_obj, para acceder a los datos de mapeo correctamente.\n\nEsto corrige el problema de seguridad de desmapear el wptr_obj mientras una creación de cola está en progreso y se pasa otro bo en la misma dirección.\n\n(seleccionado del commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)"
}
],
"affected": [
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"affectedData": [
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"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/mes_userqueue.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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}
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"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"ssvcV203": [
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"id": "CVE-2026-46311",
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"type": "Primary",
"description": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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