Vulnerability · Published Aug 23, 2022 · Assigned by redhat
CVE-2021-3736
Medium 5.5
In plain English
A medium-severity information exposure in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 84.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in the Linux kernel. A memory leak problem was found in mbochs_ioctl in samples/vfio-mdev/mbochs.c in Virtual Function I/O (VFIO) Mediated devices. This flaw could allow a local attacker to leak internal kernel information.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.14.6-1 | DEBIAN-CVE-2021-3736 |
| Debian:13 | linux | 5.14.6-1 | DEBIAN-CVE-2021-3736 |
| Debian:14 | linux | 5.14.6-1 | DEBIAN-CVE-2021-3736 |
Affected products (as reported)
Weakness: CWE-200
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1995570 x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2021-3736 x_refsource_MISC
- https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7f x_refsource_MISC