Medium severity · published May 28, 2021
CVE-2020-35504
A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0
6.0
CVSS
0.3%
EPSS
No
On KEV
Description
A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. 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:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% 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
FE
Fedora · Fedoraproject
33 · source: NVD
QE
Qemu · Qemu
before 6.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35504
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35504
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/16/3
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1909766
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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