Vulnerability · Published Jun 2, 2021 · Assigned by redhat
CVE-2021-3544
Medium 6.5
In plain English
A medium-severity memory leak in QEMU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.4%top 61.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Several memory leaks were found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. They exist in contrib/vhost-user-gpu/vhost-user-gpu.c and contrib/vhost-user-gpu/virgl.c due to improper release of memory (i.e., free) after effective lifetime.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | qemu | 6.1.0-r0 | ALPINE-CVE-2021-3544 |
| Alpine:v3.21 | qemu | 6.1.0-r0 | ALPINE-CVE-2021-3544 |
| Alpine:v3.22 | qemu | 6.1.0-r0 | ALPINE-CVE-2021-3544 |
| Alpine:v3.23 | qemu | 6.1.0-r0 | ALPINE-CVE-2021-3544 |
| Alpine:v3.24 | qemu | 6.1.0-r0 | ALPINE-CVE-2021-3544 |
| Debian:12 | qemu | 1:6.1+dfsg-1 | DEBIAN-CVE-2021-3544 |
| Debian:13 | qemu | 1:6.1+dfsg-1 | DEBIAN-CVE-2021-3544 |
| Debian:14 | qemu | 1:6.1+dfsg-1 | DEBIAN-CVE-2021-3544 |
| Ubuntu:22.04:LTS | qemu | 1:6.2+dfsg-2ubuntu5 | UBUNTU-CVE-2021-3544 |
Affected products (as reported)
Weakness: CWE-401
References
- [oss-security] 20210531 QEMU: security issues in vhost-user-gpu mailing-list, x_refsource_MLIST
- https://bugzilla.redhat.com/show_bug.cgi?id=1958935 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210720-0008/ x_refsource_CONFIRM
- DSA-4980 vendor-advisory, x_refsource_DEBIAN
- GLSA-202208-27 vendor-advisory, x_refsource_GENTOO