VulnerabilityModified
CVE-2021-3392
A use-after-free flaw was found in the MegaRAID emulator of QEMU.
LOW 3.2EPSS 0.45%
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 3.2 LOWCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- qemu/qemu · fedoraproject/fedora · debian/debian linux
- Source
- secalert@redhat.com
References
- https://bugs.launchpad.net/qemu/+bug/1914236Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1924042Issue Tracking, Patch, Third 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 List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0001/Third Party Advisory
- https://bugs.launchpad.net/qemu/+bug/1914236Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1924042Issue Tracking, Patch, Third 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 List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0001/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.