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Vulnerability record · CVE-2019-14835 · published 17 September 2019

CVE-2019-14835: Linux kernel classic buffer overflow vulnerability

Linux · Linux Kernel

A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.

7.8 CVSS 3.1 High EPSS 0.62% · top 52.3% CWE-120 · Classic buffer overflow
7.8CVSS 3.1 base score, v2 7.2
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
34Affected product versions listed by NVD
80References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

34 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/154572/Kernel-Live-Patch-Security-Notice-LSN-0056-1.html Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party AdvisoryVDB Entry
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/09/24/1 Mailing List
http://www.openwall.com/lists/oss-security/2019/10/03/1 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2019/10/09/3 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2019/10/09/7 Mailing ListThird Party Advisory
https://access.redhat.com/errata/RHBA-2019:2824 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2827 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2828 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2829 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2830 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2854 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2862 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2863 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2864 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2865 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2866 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2867 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2869 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2889 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2899 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2900 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2901 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2924 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14835 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQFY6JYFIQ2VFQ7QCSXPWTU Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL Mailing List
https://seclists.org/bugtraq/2019/Nov/11 Issue TrackingMailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Sep/41 Issue TrackingMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20191031-0005/ Third Party Advisory
https://usn.ubuntu.com/4135-1/ Third Party Advisory
https://usn.ubuntu.com/4135-2/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4531 Third Party Advisory
https://www.openwall.com/lists/oss-security/2019/09/17/1 ExploitMailing ListPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-14835), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.