High severity · published Aug 23, 2022
CVE-2021-3839
A flaw was found in the vhost library in DPDK
7.5
CVSS
1.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DP
Data Plane Development Kit · Dpdk
before 22.03; 22.03; 22.03; 22.03 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0; 9.0 · source: NVD
EL
Enterprise Linux Fast Datapath · Redhat
7.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3839
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3839
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
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