CVE-2021-3736

low-risk
Published 2022-08-23

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (6)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-3736
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1995570
Patch https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7...
Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-3736
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1995570
Patch https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal