Vulnerability Description
A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callback function while dropping a SCSI request. 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 6.0.0 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1910346Issue TrackingThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210720-0008/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1910346Issue TrackingThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210720-0008/Third Party Advisory
FAQ
What is CVE-2020-35503?
CVE-2020-35503 is a vulnerability with a CVSS score of 6.0 (MEDIUM). A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callbac...
How severe is CVE-2020-35503?
CVE-2020-35503 has been rated MEDIUM with a CVSS base score of 6.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-35503?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Fedoraproject Fedora.