CVE-2020-27821
Medium
Description
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.
SeverityMedium
CVSS6.0
Exploit probability—
Product
Qemu
PublishedDec 8, 2020
First seenDec 8, 2020
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- qemu qemu5.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | v < 5.2.0 | 5.2.0 |
| debian debian_linux | 10.0 | — |
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