Vulnerability · Published Feb 24, 2022 · Assigned by redhat
CVE-2021-3608
Medium 6.0
In plain English
A medium-severity security flaw 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 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.0Medium
Exploit odds (30 days)0.4%top 69.7% 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 in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. 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-2021-3608 |
| Debian:13 | qemu | 1:5.2+dfsg-11 | DEBIAN-CVE-2021-3608 |
| Debian:14 | qemu | 1:5.2+dfsg-11 | DEBIAN-CVE-2021-3608 |
| Ubuntu:22.04:LTS | qemu | 1:6.0+dfsg-2expubuntu1 | UBUNTU-CVE-2021-3608 |
Affected products (as reported)
Weakness: CWE-824
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1973383 x_refsource_MISC
- https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg07926.html x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220318-0002/ 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