CVE-2014-2706

Condición de carrera en el subsistema mac80211 en el kernel de Linux anterior a 3.13.7 permite a atacantes remotos causar una denegación de servicio (caída de sistema) a través de trafico de red que no interactúa debidamente con el estado WLAN_STA_PS_STA (también conocido como el modo power-save), relacionado con sta_info.c y tx.c.

A race condition flaw was found in the way the Linux kernel's mac80211 subsystem implementation handled synchronization between TX and STA wake-up code paths. A remote attacker could use this flaw to crash the system.

The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that Linux kernel's ptrace subsystem did not properly sanitize the address-space-control bits when the program-status word was being set. On IBM S/390 systems, a local, unprivileged user could use this flaw to set address-space-control bits to the kernel space, and thus gain read and write access to kernel memory. It was found that the permission checks performed by the Linux kernel when a netlink message was received were not sufficient. A local, unprivileged user could potentially bypass these restrictions by passing a netlink socket as stdout or stderr to a more privileged process and altering the output of this process.