CVE-2020-35504 describes a NULL pointer dereference vulnerability in QEMU's SCSI emulation, affecting versions prior to 6.0.0 and various Debian and Fedora distributions. This flaw allows a privileged guest user to trigger a denial of service on the host by crashing the QEMU process. Rated Medium (CVSS 6.0), it requires high privileges on the guest system and has a low attack complexity, primarily impacting system availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.0.0CPE matchmatch criteria | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
QEMU vulnerabilities
Jun 9, 2026A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
May 11, 2021QEMU: NULL pointer dereference in scsi_req_continue() in hw/scsi/scsi-bus.c
Dec 21, 2020