An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1922441 | issue tracking third party advisory patch |
| https://bugs.launchpad.net/qemu/+bug/1913873 | exploit third party advisory patch |
| https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html | third party advisory mailing list |
| https://security.gentoo.org/glsa/202208-27 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | third party advisory mailing list |