USN-4135-2

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USN-4135-2

Summary: linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial vulnerabilities

Details: Peter Pi discovered a buffer overflow in the virtio network backend (vhost_net) implementation in the Linux kernel. An attacker in a guest may be able to use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS. (CVE-2019-14835) It was discovered that the Linux kernel on PowerPC architectures did not properly handle Facility Unavailable exceptions in some situations. A local attacker could use this to expose sensitive information. (CVE-2019-15030) It was discovered that the Linux kernel on PowerPC architectures did not properly handle exceptions on interrupts in some situations. A local attacker could use this to expose sensitive information. (CVE-2019-15031)

References: https://ubuntu.com/security/notices/USN-4135-2, https://ubuntu.com/security/CVE-2019-14835, https://ubuntu.com/security/CVE-2019-15030, https://ubuntu.com/security/CVE-2019-15031