========================================================================== Ubuntu Security Notice USN-4007-1 June 04, 2019
linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: A system hardening measure could be bypassed. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-meta: - linux-oem: Linux kernel for OEM processors - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors Details: Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary. As a hardening measure, this update disables a.out support. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1014-oracle 4.15.0-1014.16 linux-image-4.15.0-1033-gcp 4.15.0-1033.35 linux-image-4.15.0-1035-kvm 4.15.0-1035.35 linux-image-4.15.0-1037-raspi2 4.15.0-1037.39 linux-image-4.15.0-1039-oem 4.15.0-1039.44 linux-image-4.15.0-1040-aws 4.15.0-1040.42 linux-image-4.15.0-1054-snapdragon 4.15.0-1054.58 linux-image-4.15.0-51-generic 4.15.0-51.55 linux-image-4.15.0-51-generic-lpae 4.15.0-51.55 linux-image-4.15.0-51-lowlatency 4.15.0-51.55 linux-image-aws 4.15.0.1040.39 linux-image-gcp 4.15.0.1033.35 linux-image-generic 4.15.0.51.53 linux-image-generic-lpae 4.15.0.51.53 linux-image-kvm 4.15.0.1035.35 linux-image-lowlatency 4.15.0.51.53 linux-image-oem 4.15.0.1039.43 linux-image-oracle 4.15.0.1014.17 linux-image-raspi2 4.15.0.1037.35 linux-image-snapdragon 4.15.0.1054.57 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: https://usn.ubuntu.com/4007-1 CVE-2019-11191 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-51.55 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1040.42 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1033.35 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1035.35 https://launchpad.net/ubuntu/+source/linux-meta/4.15.0.51.53 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1039.44 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1014.16 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1037.39 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1054.58
signature.asc
Description: PGP signature
-- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce
