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(parent: 6ada1fc) | patch
time: adjtimex: Validate the ADJ_FREQUENCY values
authorSasha Levin <sasha.levin@oracle.com>
Thu, 4 Dec 2014 00:25:05 +0000 (19:25 -0500)
committerJohn Stultz <john.stultz@linaro.org>
Wed, 7 Jan 2015 17:50:32 +0000 (09:50 -0800)
commit5e5aeb4367b450a28f447f6d5ab57d8f2ab16a5f
tree13c92234f198f0cc9147b65f4d90bcb15018f9e9tree | snapshot (tar.gz zip)
parent6ada1fc0e1c4775de0e043e1bd3ae9d065491aa5commit | diff
time: adjtimex: Validate the ADJ_FREQUENCY values

Verify that the frequency value from userspace is valid and makes sense.

Unverified values can cause overflows later on.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
[jstultz: Fix up bug for negative values and drop redunent cap check]
Signed-off-by: John Stultz <john.stultz@linaro.org>
kernel/time/ntp.c diff | blob | blame | history