From 5418ae3188a9a57f318f51c3c26c0fedfea82f8b Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 10 Sep 2013 21:41:16 -0700 Subject: [PATCH] staging: dgnc: fix potential format string flaw Make sure that format strings cannot leak into printk() calls from the msgbuf string. Signed-off-by: Kees Cook Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dgnc/dgnc_driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c index f8c1e22585d6..71d2b83cc3a1 100644 --- a/drivers/staging/dgnc/dgnc_driver.c +++ b/drivers/staging/dgnc/dgnc_driver.c @@ -454,7 +454,7 @@ static void dgnc_cleanup_board(struct board_t *brd) DGNC_LOCK(dgnc_global_lock, flags); brd->msgbuf = NULL; - printk(brd->msgbuf_head); + printk("%s", brd->msgbuf_head); kfree(brd->msgbuf_head); brd->msgbuf_head = NULL; DGNC_UNLOCK(dgnc_global_lock, flags); @@ -710,7 +710,7 @@ static int dgnc_found_board(struct pci_dev *pdev, int id) DPR_INIT(("dgnc_scan(%d) - printing out the msgbuf\n", i)); DGNC_LOCK(dgnc_global_lock, flags); brd->msgbuf = NULL; - printk(brd->msgbuf_head); + printk("%s", brd->msgbuf_head); kfree(brd->msgbuf_head); brd->msgbuf_head = NULL; DGNC_UNLOCK(dgnc_global_lock, flags); -- 2.30.2