Searched hist:"8382 fcac1b813ad0a4e68a838fc7ae93fa39eda0" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/kernel/ |
| H A D | fork.c | diff 8382fcac1b813ad0a4e68a838fc7ae93fa39eda0 Thu Dec 20 21:26:06 CST 2012 Eric W. Biederman <ebiederm@xmission.com> pidns: Outlaw thread creation after unshare(CLONE_NEWPID)
The sequence:
unshare(CLONE_NEWPID)
clone(CLONE_THREAD|CLONE_SIGHAND|CLONE_VM)
Creates a new process in the new pid namespace without setting
pid_ns->child_reaper. After forking this results in a NULL
pointer dereference.
Avoid this and other nonsense scenarios that can show up after
creating a new pid namespace with unshare by adding a new
check in copy_prodcess.
Pointed-out-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
|