CVE-2021-3839

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125 CWE-787

Affected software

Vendor	Product	Versions
n/a	dpdk	Fixed in dpdk v22.03

References

https://access.redhat.com/security/cve/CVE-2021-3839Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2025882Issue Tracking, Patch, Third Party Advisory
https://github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5Patch, Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3839Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2025882Issue Tracking, Patch, Third Party Advisory
https://github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5Patch, Third Party Advisory

Timeline

Published: Aug 23, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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