High severity7.8NVD Advisory· Published Jul 19, 2026· Updated Sep 2, 2026
CVE-2026-64051
CVE-2026-64051
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]
Affected products
2Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/8c795012d0e06b7740e40319b86ff8d2a435098dnvdPatch
- git.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650nvdPatch
- git.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0nvdPatch
- git.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510nvdPatch
- git.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69nvdPatch
News mentions
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