ubuntu-usn

USN-3619-1: Linux kernel vulnerabilities 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 Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995) It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could [ more… ]

USN-3617-3: Linux kernel (Raspberry Pi 2) vulnerabilities linux-raspi2 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Summary Several security issues were fixed in the Linux kernel. Software Description linux-raspi2 – Linux kernel for Raspberry Pi 2 Details It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861) It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15129) Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. [ more… ]

USN-3618-1: LibVNCServer vulnerability libvncserver vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary LibVNCServer could be made to crash, expose sensitive information, or run programs if it received specially crafted network traffic. Software Description libvncserver – vnc server library Details It was discovered that LibVNCServer incorrectly handled certain packet lengths. A remote attacker able to connect to a LibVNCServer could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10 libvncclient1 – 0.9.11+dfsg-1ubuntu0.1 libvncserver1 – 0.9.11+dfsg-1ubuntu0.1 Ubuntu 16.04 LTS libvncserver1 – 0.9.10+dfsg-3ubuntu0.16.04.2 Ubuntu 14.04 LTS libvncserver0 – 0.9.9+dfsg-1ubuntu1.3 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you [ more… ]

USN-3617-2: Linux (HWE) vulnerabilities linux-hwe, linux-gcp, linux-oem 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-gcp – Linux kernel for Google Cloud Platform (GCP) systems linux-hwe – Linux hardware enablement (HWE) kernel linux-oem – Linux kernel for OEM processors Details USN-3617-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861) It was discovered that the KVM implementation in the [ more… ]

USN-3617-1: Linux kernel vulnerabilities linux vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Summary Several security issues were fixed in the Linux kernel. Software Description linux – Linux kernel Details It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-0861) It was discovered that the KVM implementation in the Linux kernel allowed passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS. (CVE-2017-1000407) It was discovered that a use-after-free vulnerability existed in the network namespaces implementation in the Linux kernel. A local attacker could [ more… ]