Out-of-bounds Read in Dpdk Data Plane Development Kit
CVE-2021-3839
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.017 · change: +0.001
Affected products
- Dpdk Data Plane Development Kit — versions 22.03
- Fedoraproject Fedora — versions 35
- Red Hat Enterprise Linux — versions 7.0, 8.0, 9.0
- Red Hat Enterprise Linux Fast Datapath — versions 7.0, 8.0
- Dpdk — versions Fixed in dpdk v22.03
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/CVE-2021-3839 (Third Party Advisory)
- github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3839?
- CVE-2021-3839 is a high-severity vulnerability in Dpdk Data Plane Development Kit, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2022-08-23.
- How severe is CVE-2021-3839?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3839 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.