The fbld instruction emulation in Xen 3.3.x through 4.3.x...
Low severity
Unreviewed
Published
May 17, 2022
to the GitHub Advisory Database
•
Updated Jan 27, 2023
Description
Published by the National Vulnerability Database
Oct 1, 2013
Published to the GitHub Advisory Database
May 17, 2022
Last updated
Jan 27, 2023
The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.
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