Vulnerability · Published Feb 18, 2022 · Assigned by redhat
CVE-2021-3947
Medium 5.5
In plain English
A medium-severity out-of-bounds read in QEMU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 75.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qemu | 1:6.2+dfsg-1 | DEBIAN-CVE-2021-3947 |
| Debian:13 | qemu | 1:6.2+dfsg-1 | DEBIAN-CVE-2021-3947 |
| Debian:14 | qemu | 1:6.2+dfsg-1 | DEBIAN-CVE-2021-3947 |
| Ubuntu:22.04:LTS | qemu | 1:6.2+dfsg-2ubuntu5 | UBUNTU-CVE-2021-3947 |
Affected products (as reported)
Weakness: CWE-125
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2021869 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220318-0003/ x_refsource_CONFIRM
- GLSA-202208-27 vendor-advisory, x_refsource_GENTOO