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Date: Sun, 17 Oct 2010 18:41:20 +0400 From: Vasiliy Kulikov <segooon@...il.com> To: kernel-janitors@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org Subject: [PATCH 3/8] char: mwave: fix information leak to userland Structure rAbilities is copied to userland with uart_enable, mwave_os_name and bios_task_name array end elements and some padding fields unitialized. It leads to leaking of stack memory. Signed-off-by: Vasiliy Kulikov <segooon@...il.com> --- Compile tested. drivers/char/mwave/mwavedd.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c index 1d82d58..73b6880 100644 --- a/drivers/char/mwave/mwavedd.c +++ b/drivers/char/mwave/mwavedd.c @@ -165,6 +165,7 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, "mwavedd::mwave_ioctl," " IOCTL_MW_DSP_ABILITIES calling" " tp3780I_QueryAbilities\n"); + memset(&rAbilities, 0, sizeof(MW_ABILITIES)); mutex_lock(&mwave_mutex); retval = tp3780I_QueryAbilities(&pDrvData->rBDData, &rAbilities); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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