From 690e744869f3262855b83b4fb59199cf142765b0 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Mon, 19 Oct 2009 19:55:13 -0400 Subject: [SCSI] gdth: Prevent negative offsets in ioctl CVE-2009-3080 A negative offset could be used to index before the event buffer and lead to a security breach. Signed-off-by: Dave Jones Cc: Stable Tree Signed-off-by: James Bottomley --- drivers/scsi/gdth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c index 185e6bc4dd4..9e8fce0f0c1 100644 --- a/drivers/scsi/gdth.c +++ b/drivers/scsi/gdth.c @@ -2900,7 +2900,7 @@ static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr) eindex = handle; estr->event_source = 0; - if (eindex >= MAX_EVENTS) { + if (eindex < 0 || eindex >= MAX_EVENTS) { spin_unlock_irqrestore(&ha->smp_lock, flags); return eindex; } -- cgit v1.2.3-70-g09d2