USN-4076-1: Linux kernel vulnerabilities
First published: Thu Jul 25 2019(Updated: )
It was discovered that a race condition existed in the Serial Attached SCSI (SAS) implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2018-20836) It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833) It was discovered that the Bluetooth Human Interface Device Protocol (HIDP) implementation in the Linux kernel did not properly verify strings were NULL terminated in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11884) It was discovered that the Linux kernel on ARM processors allowed a tracing process to modify a syscall after a seccomp decision had been made on that syscall. A local attacker could possibly use this to bypass seccomp restrictions. (CVE-2019-2054) Hugues Anguelkov discovered that the Broadcom Wifi driver in the Linux kernel did not properly prevent remote firmware events from being processed for USB Wifi devices. A physically proximate attacker could use this to send firmware events to the device. (CVE-2019-9503) It was discovered that an integer overflow existed in the Freescale (PowerPC) hypervisor manager in the Linux kernel. A local attacker with write access to /dev/fsl-hv could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-10142)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-4.4.0-1052-kvm | <4.4.0-1052.59 | 4.4.0-1052.59 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1088-aws | <4.4.0-1088.99 | 4.4.0-1088.99 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1117-raspi2 | <4.4.0-1117.126 | 4.4.0-1117.126 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-generic | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-generic-lpae | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-lowlatency | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-powerpc-e500mc | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-powerpc-smp | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-powerpc64-emb | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-157-powerpc64-smp | <4.4.0-157.185 | 4.4.0-157.185 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-aws | <4.4.0.1088.91 | 4.4.0.1088.91 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-generic | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-kvm | <4.4.0.1052.52 | 4.4.0.1052.52 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-lowlatency | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-e500mc | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-smp | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-emb | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-smp | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-raspi2 | <4.4.0.1117.117 | 4.4.0.1117.117 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-virtual | <4.4.0.157.165 | 4.4.0.157.165 |
| =16.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2018-20836
- https://ubuntu.com/security/CVE-2019-10142
- https://ubuntu.com/security/CVE-2019-11833
- https://ubuntu.com/security/CVE-2019-11884
- https://ubuntu.com/security/CVE-2019-2054
- https://ubuntu.com/security/CVE-2019-9503
- https://ubuntu.com/security/notices/USN-4118-1
- https://ubuntu.com/security/notices/USN-4068-2
- https://ubuntu.com/security/notices/USN-4068-1
- https://ubuntu.com/security/notices/USN-4069-2
- https://ubuntu.com/security/notices/USN-4095-2
- https://ubuntu.com/security/notices/USN-4069-1
- https://ubuntu.com/security/notices/USN-4095-1
- https://ubuntu.com/security/notices/USN-3980-1
- https://ubuntu.com/security/notices/USN-3981-1
- https://ubuntu.com/security/notices/USN-3981-2
- https://ubuntu.com/security/notices/USN-3980-2
- https://ubuntu.com/security/notices/USN-3979-1
- https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1052.59
- https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1088.99
- https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1117.126
- https://launchpad.net/ubuntu/+source/linux-signed/4.4.0-157.185
- https://launchpad.net/ubuntu/+source/linux/4.4.0-157.185
- https://launchpad.net/ubuntu/+source/linux-meta-aws/4.4.0.1088.91
- https://launchpad.net/ubuntu/+source/linux-meta/4.4.0.157.165
- https://launchpad.net/ubuntu/+source/linux-meta-kvm/4.4.0.1052.52
- https://launchpad.net/ubuntu/+source/linux-meta-raspi2/4.4.0.1117.117
- https://ubuntu.com/security/notices/USN-4076-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for these Linux kernel vulnerabilities?
The vulnerability ID for these Linux kernel vulnerabilities is CVE-2018-20836.
What is the impact of the Linux kernel vulnerability (CVE-2018-20836)?
The Linux kernel vulnerability (CVE-2018-20836) can potentially cause a denial of service (system crash) or execute arbitrary code.
Which versions of Ubuntu are affected by these Linux kernel vulnerabilities?
The Linux kernel vulnerabilities affect Ubuntu 16.04.
How can I fix the Linux kernel vulnerability (CVE-2018-20836)?
To fix the Linux kernel vulnerability (CVE-2018-20836), update your Ubuntu system to version 4.4.0-1052.59 or later.
Where can I find more information about these Linux kernel vulnerabilities?
More information about these Linux kernel vulnerabilities can be found on the Ubuntu security website.
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