High 7.8Published Jul 19, 2026

CVE-2026-64051accel/qaic: Add overflow check to remap_pfn_range during mmap

Updated under an hour ago (Oct 27, 2026, 8:25 PM ET)

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Exploited in the last 30 days

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]

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ff13be8303336ead5621712f2c55012d738878b5 before 9baafc2fea096279e75480f93fd5942e8336b510; from ff13be8303336ead5621712f2c55012d738878b5 before 8dd6edbe26770df147136c3f2ac976c873b82650; from ff13be8303336ead5621712f2c55012d738878b5 before 97a8e89cdef36207a8776edc03d6931763a06ad0; from ff13be8303336ead5621712f2c55012d738878b5 before 8c795012d0e06b7740e40319b86ff8d2a435098d; from ff13be8303336ead5621712f2c55012d738878b5 before aa16b2bc0f02709919e2435f531406531e5bcc69	CNA record
linux linux_kernel linux:linux_kernel	from 6.4 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.34; from 6.19 before 7.0.11; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510	patch
https://git.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650	patch
https://git.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0	patch
https://git.kernel.org/stable/c/8c795012d0e06b7740e40319b86ff8d2a435098d	patch
https://git.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.