CVE-2026-64357

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> xfs: fix exchmaps reservation limit check<br /> <br /> xfs_exchmaps_estimate_overhead() adds the bmbt and rmapbt<br /> overhead to a local resblks variable, but the final UINT_MAX<br /> check still tests req-&gt;resblks. That is the reservation value<br /> from before the overhead was added.<br /> <br /> The computed value is stored back in req-&gt;resblks and later passed<br /> to xfs_trans_alloc(), whose block reservation argument is unsigned<br /> int. Check the computed reservation so the existing limit applies<br /> to the value that will be used.