CVE-2021-3416
Medium
Description
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
SeverityMedium
CVSS6.0
Exploit probability—
Product
Qemu
PublishedMar 18, 2021
First seenMar 18, 2021
Weakness typeCWE-835CWE-835
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| qemu qemu | v ≤ 5.2.0 | — |
| fedoraproject fedora | 33 | — |
| redhat enterprise_linux | 6.0, 7.0, 8.0 | — |
| debian debian_linux | 9.0, 10.0 | — |
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