Messages in this thread Patch in this message | | | From | Vasiliy Kulikov <> | Subject | [PATCH 2/8] char: hpet: fix information leak to userland | Date | Sun, 17 Oct 2010 18:41:16 +0400 |
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Structure info is copied to userland with some padding fields unitialized. It leads to leaking of stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> --- Compile tested.
drivers/char/hpet.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index a4eee32..f6722ef 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -581,6 +581,7 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, break; case HPET_INFO: { + memset(info, 0, sizeof(*info)); if (devp->hd_ireqfreq) info->hi_ireqfreq = hpet_time_div(hpetp, devp->hd_ireqfreq); -- 1.7.0.4
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