A use after free vulnerability was found in pppunregisterchannel function. This is triggered when network namespace is removed while pppasync channel is still registered in it and pppunregisterchannel() tries to access its per-netns data in the defunct namespace.

An attacker who could control this memory that is being used in the defunct namespace could create a denial of service by spinlocking a CPU.

An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89

CVE request:

http://seclists.org/oss-sec/2016/q2/319

A vulnerability was found in the Linux kernel in function rdsincinfocopy of file net/rds/recv.c. The last field "flags" of object "minfo" is not initialized. Copying this object out may leak kernel stack data. Assign 0 to it to avoid leak.

Upstream bug:

https://patchwork.ozlabs.org/patch/629110/

Upstream fix:

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=4116def2337991b39919f3b448326e21c40e0dbb