Red Hat Security Advisory 2014-0100-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's TCP/IP protocol suite implementation handled sending of certain UDP packets over sockets that used the UDP_CORK option when the UDP Fragmentation Offload feature was enabled on the output device. A local, unprivileged user could use this flaw to cause a denial of service or, potentially, escalate their privileges on the system. A flaw was found in the way the perf_trace_event_perm() function in the Linux kernel checked permissions for the function tracer functionality. An unprivileged local user could use this flaw to enable function tracing and cause a denial of service on the system.
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Ubuntu Security Notice 2049-1 - Miroslav Vadkerti discovered a flaw in how the permissions for network sysctls are handled in the Linux kernel. An unprivileged local user could exploit this flaw to have privileged access to files in /proc/sys/net/. A flaw was discovered in the Linux kernel's dm snapshot facility. A remote authenticated user could exploit this flaw to obtain sensitive information or modify/corrupt data. Various other issues were also addressed.
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