USN-3419-1: Linux kernel vulnerabilities
18 September 2017
linux, linux-raspi2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
Several security issues were fixed in the Linux kernel.
- linux - Linux kernel
- linux-raspi2 - Linux kernel for Raspberry Pi 2
It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-1000251)
It was discovered that a buffer overflow existed in the Broadcom FullMAC WLAN driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7541)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 17.04
- linux-image-4.10.0-1018-raspi2 - 4.10.0-1018.21
- linux-image-4.10.0-35-generic - 4.10.0-35.39
- linux-image-4.10.0-35-generic-lpae - 4.10.0-35.39
- linux-image-4.10.0-35-lowlatency - 4.10.0-35.39
- linux-image-generic - 220.127.116.11.35
- linux-image-generic-lpae - 18.104.22.168.35
- linux-image-lowlatency - 22.214.171.124.35
- linux-image-raspi2 - 126.96.36.1998.19
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.