CVE-2021-3736

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-23 · updated 2026-06-17
Weakness: CWE-200

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 products

Linux kernel: through 5.14.20

References

https://access.redhat.com/security/cve/CVE-2021-3736
https://bugzilla.redhat.com/show_bug.cgi?id=1995570
https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7f
https://access.redhat.com/security/cve/CVE-2021-3736
https://bugzilla.redhat.com/show_bug.cgi?id=1995570
https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7f

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