CVE-2021-3392

3.2 LOW

A use-after-free flaw was found in the MegaRAID emulator of QEMU

Published: 2021-03-23 · Last updated: 2026-06-17

Severity and scoring

CVSS: 3.2 LOW
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
CWE: CWE-416

Affected products

Vendor	Product
debian	debian_linux, fedora, qemu
fedoraproject	debian_linux, fedora, qemu
qemu	debian_linux, fedora, qemu

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3392
[Exploit reference]https://bugs.launchpad.net/qemu/+bug/1914236
[Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1924042
[Other]https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html
[Other]https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
[Other]https://security.netapp.com/advisory/ntap-20210507-0001/
[Exploit reference]https://bugs.launchpad.net/qemu/+bug/1914236
[Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1924042
[Other]https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html
[Other]https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
[Other]https://security.netapp.com/advisory/ntap-20210507-0001/

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