#ubuntu

Ubuntu Security Notice 5589-1 - Asaf Modelevsky discovered that the Intel 10GbE PCI Express Ethernet driver for the Linux kernel performed insufficient control flow management. A local attacker could possibly use this to cause a denial of service. It was discovered that the virtual terminal driver in the Linux kernel did not properly handle VGA console font changes, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

There is a double free or corruption in rotateImage() at tiffcrop.c:8839 found in libtiff 4.4.0rc1

A flaw was found in libtiff 4.4.0rc1. There is a sysmalloc assertion fail in rotateImage() at tiffcrop.c:8621 that can cause program crash when reading a crafted input.

It was found in libtiff 4.4.0rc1 that there is an invalid pointer free operation in TIFFClose() at tif_close.c:131 called by tiffcrop.c:2522 that can cause a program crash and denial of service while processing crafted input.

A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

A flaw was found in Clmg, where with the help of a maliciously crafted pandore or bmp file with modified dx and dy header field values it is possible to trick the application into allocating huge buffer sizes like 64 Gigabyte upon reading the file from disk or from a virtual buffer.

An attacker can send malicious RTMP requests to make the ZLMediaKit server crash remotely. Affected version is below commit 7d8b212a3c3368bc2f6507cb74664fc419eb9327.

Ubuntu Security Notice 5588-1 - Zhenpeng Lin discovered that the network packet scheduler implementation in the Linux kernel did not properly remove all references to a route filter before freeing it in some situations. A local attacker could use this to cause a denial of service or execute arbitrary code.

Ubuntu Security Notice 5572-2 - Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information. Roger Pau Monné discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information.

Ubuntu Security Notice 5585-1 - It was discovered that Jupyter Notebook incorrectly handled certain notebooks. An attacker could possibly use this issue of lack of Content Security Policy in Nbconvert to perform cross-site scripting attacks on the notebook server. This issue only affected Ubuntu 18.04 LTS. It was discovered that Jupyter Notebook incorrectly handled certain SVG documents. An attacker could possibly use this issue to perform cross-site scripting attacks. This issue only affected Ubuntu 18.04 LTS.