Canonical Ubuntu Linux 15.1

The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges.

Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.

ClamAV before 0.98.7 allows remote attackers to cause a denial of service (infinite loop) via a crafted xz archive file.

ClamAV before 0.98.7 allows remote attackers to cause a denial of service (crash) via a crafted petite packed file.

ClamAV before 0.98.7 allows remote attackers to cause a denial of service (infinite loop) via a crafted y0da cryptor file.

The default configuration for cURL and libcurl before 7.42.1 sends custom HTTP headers to both the proxy and destination server, which might allow remote proxy servers to obtain sensitive information by reading the header contents.

Directory traversal vulnerability in the Ubuntu network-manager package for Ubuntu (vivid) before 0.9.10.0-4ubuntu15.1, Ubuntu 14.10 before 0.9.8.8-0ubuntu28.1, and Ubuntu 14.04 LTS before 0.9.8.8-0ubuntu7.1 allows local users to change the modem device configuration or read arbitrary files via a .. (dot dot) in the file name in a request to read modem device contexts (com.canonical.NMOfono.ReadImsiContexts).

Use-after-free vulnerability in the file picker implementation in Oxide before 1.6.5 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted webpage.