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| author | Peter Hurley <[email protected]> | 2016-01-12 23:14:46 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2016-02-07 07:04:51 +0000 |
| commit | 308bbc9ab838d0ace0298268c7970ba9513e2c65 (patch) | |
| tree | d9f36e4b088a95cfffd280cda838ff4a3f5cbcc9 /net/unix/af_unix.c | |
| parent | 8250: uniphier: allow modular build with 8250 console (diff) | |
| download | kernel-308bbc9ab838d0ace0298268c7970ba9513e2c65.tar.gz kernel-308bbc9ab838d0ace0298268c7970ba9513e2c65.zip | |
serial: omap: Prevent DoS using unprivileged ioctl(TIOCSRS485)
The omap-serial driver emulates RS485 delays using software timers,
but neglects to clamp the input values from the unprivileged
ioctl(TIOCSRS485). Because the software implementation busy-waits,
malicious userspace could stall the cpu for ~49 days.
Clamp the input values to < 100ms.
Fixes: 4a0ac0f55b18 ("OMAP: add RS485 support")
Cc: <[email protected]> # 3.12+
Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions