VulnerabilityModified
CVE-2021-3839
Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write.
HIGH 7.5EPSS 1.59%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.59% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-787
- Affected
- dpdk/data plane development kit · fedoraproject/fedora · redhat/enterprise linux · redhat/enterprise linux fast datapath
- Source
- secalert@redhat.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.