CVE ID:	CVE-2021-3748
Description:	A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
Test IDs:	1.3.6.1.4.1.25623.1.0.893099   1.3.6.1.4.1.25623.1.1.2.2022.1624   1.3.6.1.4.1.25623.1.1.2.2022.1601
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-3748 https://security.gentoo.org/glsa/202208-27 https://bugzilla.redhat.com/show_bug.cgi?id=1998514 https://bugzilla.redhat.com/show_bug.cgi?id=1998514 https://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6 https://github.com/qemu/qemu/commit/bedd7e93d01961fcb16a97ae45d93acf357e11f6 https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.html https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg00388.html https://ubuntu.com/security/CVE-2021-3748 https://ubuntu.com/security/CVE-2021-3748 https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html