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CVE-2019-3900

27
FAUCET Score

CVE-2019-3900 describes an infinite loop vulnerability in the vhost_net kernel module of Linux Kernel versions up to and including v5.1-rc6, impacting various distributions like Debian, Red Hat, and Oracle. This flaw, rated High severity with a CVSS score of 7.7, allows a remote guest user to trigger a Denial of Service by overwhelming the vhost_net kernel thread with packets. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.6.34, < 3.16.72CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.17, < 4.4.191CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.5, < 4.9.190CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.133CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.64CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.3MEDIUM

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.42%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0442 is in the 90th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (14)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-754.24.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1062.rt56.1022.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.10.1.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1062.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: kernel-0:3.10.0-693.61.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: kernel-0:3.10.0-693.61.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-693.61.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.5 Extended Update SupportFixed in: kernel-0:3.10.0-862.44.2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: kernel-0:3.10.0-957.38.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-147.rt24.93.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-147.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: kernel-0:4.18.0-80.15.1.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUSFixed in: kernel-0:3.10.0-957.38.1.el7
View patch

Vendor Advisories (1)

redhatCVE-2019-3900Important

Kernel: vhost_net: infinite loop while receiving packets leads to DoS

Apr 25, 2019

References

packetstormsecurity.com / files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
PatchThird Party AdvisoryVDB Entry
access.redhat.com / errata/RHSA-2019:1973
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2029
Third Party Advisory
access.redhat.com / errata/RHSA-2019:2043
Third Party Advisory
access.redhat.com / errata/RHSA-2019:3220
Third Party Advisory
access.redhat.com / errata/RHSA-2019:3309
Third Party Advisory
access.redhat.com / errata/RHSA-2019:3517
Third Party Advisory
access.redhat.com / errata/RHSA-2019:3836
Third Party Advisory
access.redhat.com / errata/RHSA-2019:3967
Third Party Advisory
access.redhat.com / errata/RHSA-2019:4058
Third Party Advisory
access.redhat.com / errata/RHSA-2020:0204
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00016.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00017.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/AYTZH6QCNITK7353S6RCRT2PQHZSDPXD
Mailing List
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/RI3WXXM5URTZSR3RVEKO6MDXDFIKTZ5R
Mailing List
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TOFNJA5NNVXQ6AV6KGZB677JIVXAMJHT
Mailing List
seclists.org / bugtraq/2019/Aug/18
Mailing ListThird Party Advisory
seclists.org / bugtraq/2019/Nov/11
Mailing ListPatchThird Party Advisory
security.netapp.com / advisory/ntap-20190517-0005
Third Party Advisory
usn.ubuntu.com / 4114-1
Third Party Advisory
usn.ubuntu.com / 4115-1
Third Party Advisory
usn.ubuntu.com / 4116-1
Third Party Advisory
usn.ubuntu.com / 4117-1
Third Party Advisory
usn.ubuntu.com / 4118-1
Third Party Advisory
debian.org / security/2019/dsa-4497
Third Party Advisory
oracle.com / security-alerts/cpuApr2021.html
Third Party Advisory
spinics.net / lists/kernel/msg3111012.html
PatchThird Party Advisory
securityfocus.com / bid/108076
Third Party AdvisoryVDB Entry