USN-4145-1: Linux kernel vulnerabilities

  • Thread starter Ubuntu security notices
  • Start date
U

Ubuntu security notices

Guest
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities


A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS
Summary


Several security issues were fixed in the Linux kernel.

Software Description

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-raspi2 - Linux kernel for Raspberry Pi 2
  • linux-snapdragon - Linux kernel for Snapdragon processors
Details


It was discovered that a race condition existed in the GFS2 file system in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2016-10905)

It was discovered that the IPv6 implementation in the Linux kernel did not properly validate socket options in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18509)

It was discovered that the USB gadget Midi driver in the Linux kernel contained a double-free vulnerability when handling certain error conditions. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-20961)

It was discovered that the XFS file system in the Linux kernel did not properly handle mount failures in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2018-20976)

It was discovered that the Intel Wi-Fi device driver in the Linux kernel did not properly validate certain Tunneled Direct Link Setup (TDLS). A physically proximate attacker could use this to cause a denial of service (Wi-Fi disconnect). (CVE-2019-0136)

It was discovered that the Bluetooth UART implementation in the Linux kernel did not properly check for missing tty operations. A local attacker could use this to cause a denial of service. (CVE-2019-10207)

It was discovered that an integer overflow existed in the Linux kernel when reference counting pages, leading to potential use-after-free issues. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11487)

It was discovered that the GTCO tablet input driver in the Linux kernel did not properly bounds check the initial HID report sent by the device. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-13631)

It was discovered that the Raremono AM/FM/SW radio device driver in the Linux kernel did not properly allocate memory, leading to a use-after-free. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2019-15211)

It was discovered that a race condition existed in the CPiA2 video4linux device driver for the Linux kernel, leading to a use-after-free. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-15215)

It was discovered that the Atheros mobile chipset driver in the Linux kernel did not properly validate data in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2019-15926)

Update instructions


The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
linux-image-4.4.0-1059-kvm - 4.4.0-1059.66
linux-image-4.4.0-1095-aws - 4.4.0-1095.106
linux-image-4.4.0-1123-raspi2 - 4.4.0-1123.132
linux-image-4.4.0-1127-snapdragon - 4.4.0-1127.135
linux-image-4.4.0-165-generic - 4.4.0-165.193
linux-image-4.4.0-165-generic-lpae - 4.4.0-165.193
linux-image-4.4.0-165-lowlatency - 4.4.0-165.193
linux-image-4.4.0-165-powerpc-e500mc - 4.4.0-165.193
linux-image-4.4.0-165-powerpc-smp - 4.4.0-165.193
linux-image-4.4.0-165-powerpc64-emb - 4.4.0-165.193
linux-image-4.4.0-165-powerpc64-smp - 4.4.0-165.193
linux-image-aws - 4.4.0.1095.99
linux-image-generic - 4.4.0.165.173
linux-image-generic-lpae - 4.4.0.165.173
linux-image-kvm - 4.4.0.1059.59
linux-image-lowlatency - 4.4.0.165.173
linux-image-powerpc-e500mc - 4.4.0.165.173
linux-image-powerpc-smp - 4.4.0.165.173
linux-image-powerpc64-emb - 4.4.0.165.173
linux-image-powerpc64-smp - 4.4.0.165.173
linux-image-raspi2 - 4.4.0.1123.123
linux-image-snapdragon - 4.4.0.1127.119
linux-image-virtual - 4.4.0.165.173

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

References


Continue reading...
 
Top