Ubuntu Security Notice USN-6626-3

Ubuntu Security Notice 6626-3 - Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling sessions operations. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service.

arbitrary code attacker channel code denial of service event handling implementation infrastructure kernel ksmbd linux linux kernel notice operations race race condition security security notice service sessions ubuntu usn xen