CVE-2019-3900
First published: Thu Apr 11 2019(Updated: )
An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.32-754.24.2.el6 | 0:2.6.32-754.24.2.el6 |
| redhat/kernel-rt | <0:3.10.0-1062.rt56.1022.el7 | 0:3.10.0-1062.rt56.1022.el7 |
| redhat/kernel-alt | <0:4.14.0-115.10.1.el7a | 0:4.14.0-115.10.1.el7a |
| redhat/kernel | <0:3.10.0-1062.el7 | 0:3.10.0-1062.el7 |
| redhat/kernel | <0:3.10.0-693.61.1.el7 | 0:3.10.0-693.61.1.el7 |
| redhat/kernel | <0:3.10.0-862.44.2.el7 | 0:3.10.0-862.44.2.el7 |
| redhat/kernel | <0:3.10.0-957.38.1.el7 | 0:3.10.0-957.38.1.el7 |
| redhat/kernel-rt | <0:4.18.0-147.rt24.93.el8 | 0:4.18.0-147.rt24.93.el8 |
| redhat/kernel | <0:4.18.0-147.el8 | 0:4.18.0-147.el8 |
| redhat/kernel | <0:4.18.0-80.15.1.el8_0 | 0:4.18.0-80.15.1.el8_0 |
| Linux Kernel | <5.1 | |
| Linux Kernel | =5.1-rc1 | |
| Linux Kernel | =5.1-rc2 | |
| Linux Kernel | =5.1-rc3 | |
| Linux Kernel | =5.1-rc4 | |
| Linux Kernel | =5.1-rc5 | |
| Linux Kernel | =5.1-rc6 | |
| Fedora | =29 | |
| Fedora | =30 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Debian | =8.0 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.04 | |
| NetApp Active IQ Unified Manager | >=9.5 | |
| NetApp SolidFire & HCI Management Node | ||
| NetApp SnapProtect | ||
| NetApp SolidFire & HCI Storage Node | ||
| NetApp Storage Replication Adapter | >=7.2 | |
| NetApp VASA Provider | >=7.2 | |
| NetApp Virtual Storage Console | >=7.2 | |
| NetApp CN1610 | ||
| NetApp CN1610 Firmware | ||
| Oracle SD-WAN Edge | =8.2 | |
| Linux Kernel | >=2.6.34<3.16.72 | |
| Linux Kernel | >=3.17<4.4.191 | |
| Linux Kernel | >=4.5<4.9.190 | |
| Linux Kernel | >=4.10<4.14.133 | |
| Linux Kernel | >=4.15<4.19.64 | |
| Linux Kernel | >=4.20<5.2 | |
| All of | ||
| NetApp CN1610 | ||
| NetApp CN1610 Firmware | ||
| Fedora | =28 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.17-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-3900 https://nvd.nist.gov/vuln/detail/CVE-2019-3900
- https://bugzilla.redhat.com/show_bug.cgi?id=1698757
- https://access.redhat.com/errata/RHSA-2019:3836
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:1973
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2019:4058
- https://access.redhat.com/errata/RHSA-2019:3967
- https://access.redhat.com/errata/RHSA-2019:3220
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/errata/RHSA-2020:0204
- https://access.redhat.com/security/cve/cve-2019-3900
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- http://www.securityfocus.com/bid/108076
- https://seclists.org/bugtraq/2019/Aug/18
- https://seclists.org/bugtraq/2019/Nov/11
- https://www.debian.org/security/2019/dsa-4497
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYTZH6QCNITK7353S6RCRT2PQHZSDPXD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TOFNJA5NNVXQ6AV6KGZB677JIVXAMJHT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RI3WXXM5URTZSR3RVEKO6MDXDFIKTZ5R/
- https://usn.ubuntu.com/4114-1/
- https://usn.ubuntu.com/4115-1/
- https://usn.ubuntu.com/4116-1/
- https://usn.ubuntu.com/4117-1/
- https://usn.ubuntu.com/4118-1/
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3900
- https://security.netapp.com/advisory/ntap-20190517-0005/
- https://www.spinics.net/lists/kernel/msg3111012.html
- https://launchpad.net/bugs/cve/CVE-2019-3900
- https://www.openwall.com/lists/oss-security/2019/04/25/2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1702940
- https://security-tracker.debian.org/tracker/CVE-2019-3900
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3900
- https://nvd.nist.gov/vuln/detail/CVE-2019-3900
- https://ubuntu.com/security/CVE-2019-3900
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2019-3900?
CVE-2019-3900 has been assigned a severity rating of high due to the potential for an infinite loop in the vhost_net kernel module.
How do I fix CVE-2019-3900?
To fix CVE-2019-3900, upgrade to the recommended kernel versions listed in your Linux distribution's advisory.
What impact does CVE-2019-3900 have on system performance?
CVE-2019-3900 may cause significant system performance degradation by putting the system into an infinite loop when handling incoming packets.
Is my system vulnerable to CVE-2019-3900?
If your system is running a vulnerable version of the Linux Kernel or vhost_net module up to and including v5.1-rc6, it may be susceptible to CVE-2019-3900.
Can a remote attacker exploit CVE-2019-3900?
Yes, a remote attacker can exploit CVE-2019-3900 by sending packets more quickly than the kernel can process them, potentially leading to denial-of-service.
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