Ubuntu Update for linux USN-4135-1

Published: 2019-09-19 02:03:10
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

Summary:
The remote host is missing an update for the 'linux' Linux Distribution Package(s) announced via the USN-4135-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
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. (CVE-2019-14835) It was discovered that the Linux kernel on PowerPC architectures did not properly handle Facility Unavailable exceptions in some situations. A local attacker could use this to expose sensitive information. (CVE-2019-15030) It was discovered that the Linux kernel on PowerPC architectures did not properly handle exceptions on interrupts in some situations. A local attacker could use this to expose sensitive information. (CVE-2019-15031)

Affected Versions:
'linux' Linux Distribution Package(s) on Ubuntu 19.04, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2019-14835
https://nvd.nist.gov/vuln/detail/CVE-2019-15030
https://nvd.nist.gov/vuln/detail/CVE-2019-15031

References:

https://lists.ubuntu.com/archives/ubuntu-security-announce/2019-September/005122.html

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Severity
High
CVSS Score
7.2

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