From c54ee572e54a6ee705fdd3047aa544e057b87f0f Mon Sep 17 00:00:00 2001 From: Ed Maste Date: Wed, 31 Jul 2019 16:58:09 +0000 Subject: [PATCH] pf: zero (another) output buffer in pfioctl Avoid potential structure padding leak. r350294 identified a leak via static analysis; although there's no report of a leak with the DIOCGETSRCNODES ioctl it's a good practice to zero the memory. Suggested by: kp MFC after: 3 days Sponsored by: The FreeBSD Foundation --- sys/netpfil/pf/pf_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/netpfil/pf/pf_ioctl.c b/sys/netpfil/pf/pf_ioctl.c index cfd583325cd..a216ee0aa64 100644 --- a/sys/netpfil/pf/pf_ioctl.c +++ b/sys/netpfil/pf/pf_ioctl.c @@ -3752,7 +3752,7 @@ DIOCCHANGEADDR_error: nr = 0; - p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK); + p = pstore = malloc(psn->psn_len, M_TEMP, M_WAITOK | M_ZERO); for (i = 0, sh = V_pf_srchash; i <= pf_srchashmask; i++, sh++) { PF_HASHROW_LOCK(sh);