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CVE-2019-14835

Publication date 17 September 2019

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

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.

From the Ubuntu Security Team

Peter Pi discovered a buffer overflow in the virtio network backend (vhost_net) implementation in the Linux kernel. An attacker in a guest may be able to use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS.

Status

Package Ubuntu Release Status
linux 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-29.31
18.04 LTS bionic
Fixed 4.15.0-64.73
16.04 LTS xenial
Fixed 4.4.0-164.192
14.04 LTS trusty
linux-aws 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1016.18
18.04 LTS bionic
Fixed 4.15.0-1050.52
16.04 LTS xenial
Fixed 4.4.0-1094.105
14.04 LTS trusty
linux-aws-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-aws-hwe 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 4.15.0-1050.52~16.04.1
14.04 LTS trusty Not in release
linux-azure 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1020.21
18.04 LTS bionic
Fixed 5.0.0-1020.21~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1059.64
14.04 LTS trusty
linux-azure-5.3 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-azure-edge 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-1020.21~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1059.64
14.04 LTS trusty Not in release
linux-gcp 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1017.17
18.04 LTS bionic
Fixed 4.15.0-1044.70
16.04 LTS xenial
Fixed 4.15.0-1044.46
14.04 LTS trusty Not in release
linux-gcp-5.3 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gcp-edge 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 4.15.0-1044.70
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-4.15 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 4.15.0-1044.46
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-1017.17~18.04.1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-29.31~18.04.1
16.04 LTS xenial
Fixed 4.15.0-64.73~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial
Fixed 4.15.0-64.73~16.04.1
14.04 LTS trusty Not in release
linux-kvm 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1017.18
18.04 LTS bionic
Fixed 4.15.0-1046.46
16.04 LTS xenial
Fixed 4.4.0-1058.65
14.04 LTS trusty Not in release
linux-lts-trusty 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
linux-oem 19.10 eoan
Fixed 4.15.0-1059.68
19.04 disco Ignored
18.04 LTS bionic
Fixed 4.15.0-1056.65
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-oem-5.4 19.10 eoan Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem-osp1 19.10 eoan
Fixed 5.0.0-1022.24
19.04 disco Ignored
18.04 LTS bionic
Fixed 5.0.0-1022.24
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oracle 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1004.8
18.04 LTS bionic
Fixed 4.15.0-1025.28
16.04 LTS xenial
Fixed 4.15.0-1025.28~16.04.1
14.04 LTS trusty Not in release
linux-oracle-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-raspi2 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1017.17
18.04 LTS bionic
Fixed 4.15.0-1047.51
16.04 LTS xenial
Fixed 4.4.0-1122.131
14.04 LTS trusty Not in release
linux-raspi2-5.3 19.10 eoan Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-snapdragon 19.10 eoan Not in release
19.04 disco
Fixed 5.0.0-1021.22
18.04 LTS bionic
Fixed 4.15.0-1064.71
16.04 LTS xenial
Fixed 4.4.0-1126.132
14.04 LTS trusty Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4135-2
    • Linux kernel vulnerabilities
    • 18 September 2019
    • USN-4135-1
    • Linux kernel vulnerabilities
    • 18 September 2019

Other references