CVE-2020-35506

MediumCVSS 6.7/10Last modified Jun 17, 2026

Description

A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.

Metrics

CVSS 3.1 6.7/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	QEMU	qemu 6.0.0

References

http://www.openwall.com/lists/oss-security/2021/04/16/3Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1909996Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://security.netapp.com/advisory/ntap-20210713-0006/Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/16/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/04/16/3Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1909996Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://security.netapp.com/advisory/ntap-20210713-0006/Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/04/16/3Mailing List, Third Party Advisory

Timeline

Published: May 28, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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