CVE-2021-3839

moderate-risk
Published 2022-08-23

A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.

Do I need to act?

-
0.59% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (10)

Data Plane Development Kit
Data Plane Development Kit
Data Plane Development Kit
Data Plane Development Kit
Enterprise Linux Fast Datapath
Enterprise Linux Fast Datapath

Affected Vendors

Redhat Fedoraproject Dpdk

References (6)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-3839
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2025882
Patch https://github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5
Third Party Advisory https://access.redhat.com/security/cve/CVE-2021-3839
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2025882
Patch https://github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5
44
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 16/34 · Moderate