diff options
| author | Ruchi Kandoi <kandoiruchi@google.com> | 2014-06-13 17:03:01 -0700 |
|---|---|---|
| committer | Ziyann <jaraidaniel@gmail.com> | 2014-11-26 21:10:51 +0100 |
| commit | 5f6c49e634a85bdf2e443db004a4f2e7a5875164 (patch) | |
| tree | 40404ffc1b84d613e36220d6478b39d0914cd6b8 /kernel | |
| parent | c620fdb741eaec1776e3e84e88e2676002901b14 (diff) | |
| download | kernel_samsung_tuna-5f6c49e634a85bdf2e443db004a4f2e7a5875164.zip kernel_samsung_tuna-5f6c49e634a85bdf2e443db004a4f2e7a5875164.tar.gz kernel_samsung_tuna-5f6c49e634a85bdf2e443db004a4f2e7a5875164.tar.bz2 | |
prctl: adds the capable(CAP_SYS_NICE) check to PR_SET_TIMERSLACK_PID.
Adds a capable() check to make sure that arbitary apps do not change the
timer slack for other apps.
Bug: 15000427
Change-Id: I558a2551a0e3579c7f7e7aae54b28aa9d982b209
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sys.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 8d1142a..f89cca5 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1807,6 +1807,9 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, error = PR_MCE_KILL_DEFAULT; break; case PR_SET_TIMERSLACK_PID: + if (current->pid != (pid_t)arg3 && + !capable(CAP_SYS_NICE)) + return -EPERM; rcu_read_lock(); tsk = find_task_by_pid_ns((pid_t)arg3, &init_pid_ns); if (tsk == NULL) { |