Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-64051

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
30/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> accel/qaic: Add overflow check to remap_pfn_range during mmap<br /> <br /> The call to remap_pfn_range in qaic_gem_object_mmap is susceptible to<br /> (re)mapping beyond the VMA if the BO is too large. This can cause use<br /> after free issues when munmap() unmaps only the VMA region and not the<br /> additional mappings. To prevent this, check the remaining size of the<br /> VMA before remapping and truncate the remapped length if sg-&gt;length is<br /> too large.<br /> <br /> [jhugo: fix braces from checkpatch --strict]

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools