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CVE-2025-71076

kernel: drm/xe/oa: Limit num_syncs to prevent oversized allocations

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · January 13, 2026

Updated · June 28, 2026

Description

A resource exhaustion flaw was found in the Intel Xe graphics driver's observability architecture (OA) interface. The OA open parameters did not validate the num_syncs value, allowing userspace to request arbitrarily large allocations. A malicious user could exhaust kernel memory by providing extreme values.

Statement

This affects systems with Intel Xe discrete graphics hardware. Exploitation requires access to the DRM device file, typically available to users in the video group. The fix adds input validation to reject excessive num_syncs values.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-770 · Allocation of Resources Without Limits or Throttling