CVE-2021-3392
Published: 23 March 2021
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.
Priority
Status
Package | Release | Status |
---|---|---|
qemu Launchpad, Ubuntu, Debian |
trusty |
Needed
|
impish |
Released
(1:6.0+dfsg-1~ubuntu3)
|
|
jammy |
Released
(1:6.0+dfsg-1~ubuntu3)
|
|
kinetic |
Released
(1:6.0+dfsg-1~ubuntu3)
|
|
lunar |
Released
(1:6.0+dfsg-1~ubuntu3)
|
|
xenial |
Needed
|
|
bionic |
Released
(1:2.11+dfsg-1ubuntu7.37)
|
|
focal |
Released
(1:4.2-3ubuntu6.17)
|
|
groovy |
Released
(1:5.0-5ubuntu9.9)
|
|
hirsute |
Released
(1:5.2+dfsg-9ubuntu3.1)
|
|
upstream |
Needs triage
|
|
mantic |
Released
(1:6.0+dfsg-1~ubuntu3)
|
|
Patches: upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=3791642c8d60029adf9b00bcb4e34d7d8a1aea4d |
||
qemu-kvm Launchpad, Ubuntu, Debian |
impish |
Does not exist
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
bionic |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
|
mantic |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.2 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | High |
User interaction | None |
Scope | Changed |
Confidentiality | None |
Integrity impact | None |
Availability impact | Low |
Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |