CVE-2021-3736

kernel: uninitialized kernel stack may lead to information disclosure

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Severity

Low

Red Hat Product Security

3.3

CVSS 3.1

Review impact separately from score.

Published · November 3, 2021

Updated · June 28, 2026

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.

Statement

Red Hat did not include this code into their shipped versions of the Linux kernel and, thus, the vulnerability does not affect any version of Red Hat Enterprise Linux.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE-401 · Missing Release of Memory after Effective Lifetime