CVE-2020-35503 is a NULL pointer dereference vulnerability in QEMU's megasas-gen2 SCSI host bus adapter emulation, affecting versions up to and including 6.0, specifically impacting Fedora and QEMU products. 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 local access and high privileges, with the primary impact being system availability. There is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| 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:*:*:*:*:*:*:* |
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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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.
A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callback function while dropping a SCSI request. 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.
Jun 8, 2021QEMU: NULL pointer dereference issue in megasas-gen2 host bus adapter
Dec 23, 2020