CVE-2015-1805

Vulnerabilidad en las implementaciones (1) pipe_read y (2) pipe_write en fs/pipe.c en el kernel de Linux en versiones anteriores a 3.16, no considera correctamente los efectos secundarios de llamadas __copy_to_user_inatomic y __copy_from_user_inatomic fallidas, lo que permite a usuarios locales provocar una denegación de servicio (caída del sistema) o posiblemente obtener privilegios a través de una aplicación manipulada, también conocida como una 'saturación del array del vector I/O'.

It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system.

The kernel packages contain the Linux kernel, the core of any Linux operating system. A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. It was found that the Linux kernel's implementation of vectored pipe read and write functionality did not take into account the I/O vectors that were already processed when retrying after a failed atomic access operation, potentially resulting in memory corruption due to an I/O vector array overrun. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system.