A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||Base Metrics:|
|Access Vector:||Undefined||Attack Complexity:||Undefined|
|Privileges Required:||None||User Interaction:||None|
|Integrity Impact:||Undefined||Availability Impact:||Undefined|
|Oracle Linux version 7 (qemu)||ELSA-2021-9285||2021-06-06|
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