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CVE-2019-14835

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Date: September 17, 2019

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.

Language: C

Severity Score

7.8

Related Resources (49)

Url: http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html

Url: http://www.openwall.com/lists/oss-security/2019/10/09/7

Url: https://access.redhat.com/errata/RHSA-2019:2865

Url: http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html

Url: https://access.redhat.com/errata/RHSA-2019:2864

Url: http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en

Url: https://access.redhat.com/errata/RHSA-2019:2863

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQFY6JYFIQ2VFQ7QCSXPWTUL5ZDNCJL5/

Url: https://seclists.org/bugtraq/2019/Nov/11

Url: https://access.redhat.com/errata/RHSA-2019:2862

Url: https://seclists.org/bugtraq/2019/Sep/41

Url: https://access.redhat.com/security/vulnerabilities/kernel-vhost

Url: http://www.openwall.com/lists/oss-security/2019/09/24/1

Url: https://www.openwall.com/lists/oss-security/2019/09/17/1

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-14835

Url: http://www.openwall.com/lists/oss-security/2019/10/03/1

Url: http://packetstormsecurity.com/files/154572/Kernel-Live-Patch-Security-Notice-LSN-0056-1.html

Url: https://access.redhat.com/errata/RHSA-2019:2899

Url: https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html

Url: https://access.redhat.com/errata/RHBA-2019:2824

Url: https://usn.ubuntu.com/4135-1/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/

Url: https://access.redhat.com/security/cve/CVE-2019-14835

Url: http://www.openwall.com/lists/oss-security/2019/10/09/3

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-14835

Url: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14835

Url: https://access.redhat.com/errata/RHSA-2019:2854

Url: https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html

Url: https://access.redhat.com/errata/RHSA-2019:2830

Url: https://security.netapp.com/advisory/ntap-20191031-0005/

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1750727

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQFY6JYFIQ2VFQ7QCSXPWTUL5ZDNCJL5/

Url: http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/

Url: https://www.debian.org/security/2019/dsa-4531

Url: https://security-tracker.debian.org/tracker/CVE-2019-14835

Url: https://access.redhat.com/errata/RHSA-2019:2869

Url: https://access.redhat.com/errata/RHSA-2019:2924

Url: https://access.redhat.com/errata/RHSA-2019:2901

Url: https://access.redhat.com/errata/RHSA-2019:2867

Url: https://access.redhat.com/errata/RHSA-2019:2889

Url: https://access.redhat.com/errata/RHSA-2019:2900

Url: https://usn.ubuntu.com/4135-2/

Url: https://access.redhat.com/errata/RHSA-2019:2866

Url: http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html

Url: https://access.redhat.com/errata/RHSA-2019:2829

Url: https://access.redhat.com/errata/RHSA-2019:2828

Url: https://access.redhat.com/errata/RHSA-2019:2827

Url: https://www.mend.io/vulnerability-database/CVE-2019-14835

Severity Score

7.8

Weakness Type (CWE)

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

Top Fix

Upgrade Version

Upgrade to version linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-yocto - 4.8.24+gitAUTOINC+c84532b647_f6329fd287

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.2
Access Vector (AV):	LOCAL
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

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