Vulnerability Description
A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | >= 2.10.0, <= 5.2.0 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugs.launchpad.net/qemu/+bug/1914236ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1924042Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0001/Third Party Advisory
- https://bugs.launchpad.net/qemu/+bug/1914236ExploitThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1924042Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0001/Third Party Advisory
FAQ
What is CVE-2021-3392?
CVE-2021-3392 is a vulnerability with a CVSS score of 3.2 (LOW). A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request o...
How severe is CVE-2021-3392?
CVE-2021-3392 has been rated LOW with a CVSS base score of 3.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3392?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Fedoraproject Fedora, Debian Debian Linux.