CVE-2026-64153

Description

A flaw was found in the drm/msm (Direct Rendering Manager / Qualcomm MSM) driver within the Linux kernel. This vulnerability arises from an incorrect handling of return values in the iommu_map_sgtable() function. Previously, the function would trigger a warning instead of properly returning an error when an IOMMU (Input/Output Memory Management Unit) mapping operation failed. This could lead to system instability or unexpected behavior, potentially resulting in a denial of service.

Mitigation

No mitigation is required as the vulnerable code is not present in Red Hat Enterprise Linux and Red Hat In-Vehicle OS.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score7.1N/A8.8
Attack VectorLocalN/ALocal
Attack ComplexityLowN/ALow
Privileges RequiredLowN/ALow
User InteractionNoneN/ANone
ScopeUnchangedN/AChanged
ConfidentialityHighN/AHigh
Integrity ImpactNoneN/AHigh
Availability ImpactHighN/AHigh

Vector

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

cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Understanding the Weakness (CWE)

CWE-253

Availability,Integrity

Technical Impact: Unexpected State; DoS: Crash, Exit, or Restart

An unexpected return value could place the system in a state that could lead to a crash or other unintended behaviors.

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