CVE-2019-14835
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.62% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 49.6% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-09-17 15:09Z7 YR AGO
- Last updated
- 2024-08-05 00:26Z2 YR AGO
- Reserved
- 2019-08-10
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.2)
- CNA CVSS vector
- CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
- Data version
- 5.1
- Document digest
- db6d29f1b315e58f789fac9b1cea7e325bdca727546df7be26e15ec6f3c70c89
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14835
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2019/09/17/1
- usn.ubuntu.comUSN-4135-2https://usn.ubuntu.com/4135-2/
- lists.fedoraproject.orgFEDORA-2019-e3010166bdhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQFY6JYFIQ2VFQ7QCSXPWTUL5ZDNCJL5/
- access.redhat.comRHSA-2019:2827https://access.redhat.com/errata/RHSA-2019:2827
- access.redhat.comRHSA-2019:2828https://access.redhat.com/errata/RHSA-2019:2828
- access.redhat.comRHSA-2019:2830https://access.redhat.com/errata/RHSA-2019:2830
- access.redhat.comRHSA-2019:2829https://access.redhat.com/errata/RHSA-2019:2829
- access.redhat.comRHSA-2019:2854https://access.redhat.com/errata/RHSA-2019:2854
- access.redhat.comRHSA-2019:2862https://access.redhat.com/errata/RHSA-2019:2862
- access.redhat.comRHSA-2019:2863https://access.redhat.com/errata/RHSA-2019:2863
- access.redhat.comRHSA-2019:2866https://access.redhat.com/errata/RHSA-2019:2866
- access.redhat.comRHSA-2019:2864https://access.redhat.com/errata/RHSA-2019:2864
- access.redhat.comRHSA-2019:2865https://access.redhat.com/errata/RHSA-2019:2865
- access.redhat.comRHSA-2019:2867https://access.redhat.com/errata/RHSA-2019:2867
- access.redhat.comRHSA-2019:2869https://access.redhat.com/errata/RHSA-2019:2869
- packetstormsecurity.comhttp://packetstormsecurity.com/files/154572/Kernel-Live-Patch-Security-Notice-LSN-0056-1.html
- www.openwall.com[oss-security] 20190924 Re: CVE-2019-14835: QEMU-KVM Guest to Host Kernel Escape Vulnerability: vhost/vhost_net kernel buffer overflowhttp://www.openwall.com/lists/oss-security/2019/09/24/1
- lists.opensuse.orgopenSUSE-SU-2019:2173http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
- access.redhat.comRHSA-2019:2889https://access.redhat.com/errata/RHSA-2019:2889
- lists.opensuse.orgopenSUSE-SU-2019:2181http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
- lists.debian.org[debian-lts-announce] 20190925 [SECURITY] [DLA 1930-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
- seclists.org20190925 [SECURITY] [DSA 4531-1] linux security updatehttps://seclists.org/bugtraq/2019/Sep/41
- www.debian.orgDSA-4531https://www.debian.org/security/2019/dsa-4531
- access.redhat.comRHSA-2019:2900https://access.redhat.com/errata/RHSA-2019:2900
- access.redhat.comRHSA-2019:2901https://access.redhat.com/errata/RHSA-2019:2901
- access.redhat.comRHSA-2019:2899https://access.redhat.com/errata/RHSA-2019:2899
- access.redhat.comRHSA-2019:2924https://access.redhat.com/errata/RHSA-2019:2924
- usn.ubuntu.comUSN-4135-1https://usn.ubuntu.com/4135-1/
- lists.debian.org[debian-lts-announce] 20191001 [SECURITY] [DLA 1940-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2019/10/msg00000.html
- lists.fedoraproject.orgFEDORA-2019-a570a92d5ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/
- www.openwall.com[oss-security] 20191003 Re: CVE-2019-14835: QEMU-KVM Guest to Host Kernel Escape Vulnerability: vhost/vhost_net kernel buffer overflowhttp://www.openwall.com/lists/oss-security/2019/10/03/1
- www.openwall.com[oss-security] 20191009 Re: CVE-2019-14835: QEMU-KVM Guest to Host Kernel Escape Vulnerability: vhost/vhost_net kernel buffer overflowhttp://www.openwall.com/lists/oss-security/2019/10/09/3
- www.openwall.com[oss-security] 20191009 Re: CVE-2019-14835: QEMU-KVM Guest to Host Kernel Escape Vulnerability: vhost/vhost_net kernel buffer overflowhttp://www.openwall.com/lists/oss-security/2019/10/09/7
- access.redhat.comRHBA-2019:2824https://access.redhat.com/errata/RHBA-2019:2824
- packetstormsecurity.comhttp://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20191031-0005/
- seclists.org20191108 [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)https://seclists.org/bugtraq/2019/Nov/11
- packetstormsecurity.comhttp://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- www.huawei.comhttp://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en
07 Fixed in
Debian 12
- linux Fixed in 5.2.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.2.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.2.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-164.192
- linux-aws Fixed in 4.4.0-1094.105
- linux-aws-hwe Fixed in 4.15.0-1050.52~16.04.1
- linux-azure Fixed in 4.15.0-1059.64
- linux-gcp Fixed in 4.15.0-1044.46
- linux-hwe Fixed in 4.15.0-64.73~16.04.1
- linux-kvm Fixed in 4.4.0-1058.65
- linux-oracle Fixed in 4.15.0-1025.28~16.04.1
- linux-raspi2 Fixed in 4.4.0-1122.131
- linux-snapdragon Fixed in 4.4.0-1126.132
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux Fixed in 4.15.0-64.73
- linux-aws Fixed in 4.15.0-1050.52
- linux-azure Fixed in 5.0.0-1020.21~18.04.1
- linux-gcp Fixed in 4.15.0-1044.70
- linux-gke-4.15 Fixed in 4.15.0-1044.46
- linux-gke-5.0 Fixed in 5.0.0-1017.17~18.04.1
- linux-hwe Fixed in 5.0.0-29.31~18.04.1
- linux-hwe-edge No fix yet
- linux-kvm Fixed in 4.15.0-1046.46
- linux-oem Fixed in 4.15.0-1056.65
- linux-oem-osp1 Fixed in 5.0.0-1022.24
- linux-oracle Fixed in 4.15.0-1025.28
- linux-raspi2 Fixed in 4.15.0-1047.51
- linux-snapdragon Fixed in 4.15.0-1064.71
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- linux Fixed in 3.13.0-173.224Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.4.0-1054.58Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1059.64~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-164.192~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 16.04 LTS
- linux-fips Fixed in 4.4.0-1021.26Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2018.18Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2006.7Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 16.04 LTS
- linux-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 18.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.