CVE-2021-3608 describes a flaw in QEMU's implementation of VMWare's paravirtual RDMA device, affecting versions prior to 6.1.0, including various Debian and Fedora distributions. This vulnerability stems from improper handling of a "PVRDMA_REG_DSRHIGH" write from a guest, leading to the access of an uninitialized pointer. With a CVSS score of 6.0 (Medium), it primarily poses a threat to system availability, potentially causing QEMU to crash or exhibit undefined behavior. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.1.0CPE matchmatch criteria | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
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CVE-2021-3608
Mar 8, 2022A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.
Feb 8, 2022QEMU: pvrdma: uninitialized memory unmap in pvrdma_ring_init()
Jun 17, 2021