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CVE-2026-53201

Estado: AnalizadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

Revert "drm/xe: Skip exec queue schedule toggle if queue is idle during suspend"

This reverts commit 8533051ce92015e9cc6f75e0d52119b9d91610b6.

The idle-skip optimization bypasses GuC suspend, so the GPU may not perform the context switch that flushes TLB entries for invalidated userptr VMAs. In LR/preempt-fence VM mode, this can lead to missed TLB invalidation and page faults during userptr invalidation tests.

Restore unconditional schedule toggling on suspend so the context-switch TLB flush is always performed.

This optimization will be reintroduced with a fix that does not skip suspend in LR/preempt-fence VM mode.

Leer descripción completaMostrar menos

(cherry picked from commit 6a1e7934d9a6cf46aecae00a99c2603d1295e170)

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L/PR:L) en kernel Linux que permite denial of service mediante page faults no controlados tras bypass de invalidación TLB en modo GPU preempt-fence.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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    {
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"drm/xe: Skip exec queue schedule toggle if queue is idle during suspend\"\n\nThis reverts commit 8533051ce92015e9cc6f75e0d52119b9d91610b6.\n\nThe idle-skip optimization bypasses GuC suspend, so the GPU may not\nperform the context switch that flushes TLB entries for invalidated\nuserptr VMAs. In LR/preempt-fence VM mode, this can lead to missed TLB\ninvalidation and page faults during userptr invalidation tests.\n\nRestore unconditional schedule toggling on suspend so the context-switch\nTLB flush is always performed.\n\nThis optimization will be reintroduced with a fix that does not skip\nsuspend in LR/preempt-fence VM mode.\n\n(cherry picked from commit 6a1e7934d9a6cf46aecae00a99c2603d1295e170)"
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