CVE-2021-3582
Published: 18 June 2021
A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| bionic |
Not vulnerable
(code not present)
|
|
| focal |
Released
(1:4.2-3ubuntu6.17)
|
|
| groovy |
Released
(1:5.0-5ubuntu9.9)
|
|
| hirsute |
Released
(1:5.2+dfsg-9ubuntu3.1)
|
|
| impish |
Released
(1:6.0+dfsg-2expubuntu1)
|
|
| jammy |
Released
(1:6.0+dfsg-2expubuntu1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=284f191b4abad213aed04cb0458e1600fd18d7c4 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |