CVE-2026-64051
Published Jul 19, 2026
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]
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References
Other References
https://git.kernel.org/stable/c/8c795012d0e06b7740e40319b86ff8d2a435098d
https://git.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650
https://git.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0
https://git.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510
https://git.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69
Frequently Asked Questions
What is CVE-2026-64051? +
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]
How do I check if I'm vulnerable to CVE-2026-64051? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.