CVE-2020-35505

A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. 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.

• CWE-476
• CWE-476

• http://www.openwall.com/lists/oss-security/2021/04/16/3Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1909769Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, 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, Patch, 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=1909769Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, 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, Patch, Third Party Advisory

Published

May 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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