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]

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00168.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
ff13be8303336ead5621712f2c55012d738878b5 affected < 9baafc2fea096279e75480f93fd5942e8336b510
ff13be8303336ead5621712f2c55012d738878b5 affected < 8dd6edbe26770df147136c3f2ac976c873b82650
ff13be8303336ead5621712f2c55012d738878b5 affected < 97a8e89cdef36207a8776edc03d6931763a06ad0
ff13be8303336ead5621712f2c55012d738878b5 affected < 8c795012d0e06b7740e40319b86ff8d2a435098d
ff13be8303336ead5621712f2c55012d738878b5 affected < aa16b2bc0f02709919e2435f531406531e5bcc69
Linux Linux affected
Version Status Constraints
6.4 affected —
0 unaffected < 6.4
6.6.142 unaffected ≤ 6.6.*
6.12.92 unaffected ≤ 6.12.*
6.18.34 unaffected ≤ 6.18.*
7.0.11 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

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No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/8c795012d0e06b7740e40319b86ff8d2a435098d cve-icon
https://git.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650 cve-icon
https://git.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0 cve-icon
https://git.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510 cve-icon
https://git.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69 cve-icon
https://lore.kernel.org/linux-cve-announce/2026071908-CVE-2026-64051-c665@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-64051 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-64051 cve-icon
History

Mon, 20 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Mon, 20 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Sun, 19 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
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]
Title accel/qaic: Add overflow check to remap_pfn_range during mmap
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-20T13:42:50.752Z

Reserved: 2026-07-19T07:54:57.029Z

Link: CVE-2026-64051

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-19T00:00:00Z

Links: CVE-2026-64051 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses