Vulnerability · Published Mar 25, 2022 · Assigned by redhat
CVE-2021-3582
Medium 6.5
In plain English
A medium-severity memory corruption 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 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.4%top 67.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qemu | 1:5.2+dfsg-11 | DEBIAN-CVE-2021-3582 |
| Debian:13 | qemu | 1:5.2+dfsg-11 | DEBIAN-CVE-2021-3582 |
| Debian:14 | qemu | 1:5.2+dfsg-11 | DEBIAN-CVE-2021-3582 |
| Ubuntu:22.04:LTS | qemu | 1:6.0+dfsg-2expubuntu1 | UBUNTU-CVE-2021-3582 |
Affected products (as reported)
Weakness: CWE-119
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1966266 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220429-0003/ x_refsource_CONFIRM
- GLSA-202208-27 vendor-advisory, x_refsource_GENTOO
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update mailing-list, x_refsource_MLIST