CVE-2020-35506

low-risk
Published 2021-05-28

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.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.7/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Qemu

References (10)

Mailing List http://www.openwall.com/lists/oss-security/2021/04/16/3
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1909996
Third Party Advisory https://security.gentoo.org/glsa/202208-27
Third Party Advisory https://security.netapp.com/advisory/ntap-20210713-0006/
Mailing List https://www.openwall.com/lists/oss-security/2021/04/16/3
Mailing List http://www.openwall.com/lists/oss-security/2021/04/16/3
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1909996
Third Party Advisory https://security.gentoo.org/glsa/202208-27
Third Party Advisory https://security.netapp.com/advisory/ntap-20210713-0006/
Mailing List https://www.openwall.com/lists/oss-security/2021/04/16/3
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal