Medium severity · published May 28, 2021
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
4.4
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
QE
Qemu · Qemu
before 6.0.0; 6.0.0; 6.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35505
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35505
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/16/3
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1909769
Mailing List
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
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
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