CVE-2026-64051 Details
Description
In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Add overflow check to remap_pfn_range during mmap The call to remap_pfn_range in qaic_gem_object_mmap is susceptible to (re)mapping beyond the VMA if the BO is too large. This can cause use after free issues when munmap() unmaps only the VMA region and not the additional mappings. To prevent this, check the remaining size of the VMA before remapping and truncate the remapped length if sg->length is too large. [jhugo: fix braces from checkpatch --strict]
A vulnerability in the Linux kernel's QAIC (Qualcomm AI Compiler) component allows for improper memory mapping, potentially leading to use-after-free issues. This occurs in the 'qaic_gem_object_mmap' function, where the 'remap_pfn_range' call can map memory beyond the allocated virtual memory area (VMA) if the buffer object (BO) is too large. The issue arises because 'munmap()' only removes the VMA region, leaving additional mappings intact. The vulnerability affects several versions of the Linux kernel.
Users should update to the latest version of the Linux kernel where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/8c795012d0e06b7740e40319b86ff8d2a435098d | kernel.org | Patch |
| https://git.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650 | kernel.org | Patch |
| https://git.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510 | kernel.org | Patch |
| https://git.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.4, < 6.6.142 >= 6.7, < 6.12.92 >= 6.13, < 6.18.34 >= 6.19, < 7.0.11 7.1 rc1 7.1 rc2 7.1 rc3 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 2, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | kernel.org |
| Jul 19, 2026 | New CVE Received | kernel.org |