PT-2026-64578 · Linux · Linux
CVE-2026-64357
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Published
2026-07-25
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Updated
2026-07-25
None
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In the Linux kernel, the following vulnerability has been resolved:
xfs: fix exchmaps reservation limit check
xfs exchmaps estimate overhead() adds the bmbt and rmapbt
overhead to a local resblks variable, but the final UINT MAX
check still tests req->resblks. That is the reservation value
from before the overhead was added.
The computed value is stored back in req->resblks and later passed
to xfs trans alloc(), whose block reservation argument is unsigned
int. Check the computed reservation so the existing limit applies
to the value that will be used.
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Related Identifiers
Affected Products
Linux