lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Thu, 18 Jun 2020 09:53:42 -0500
From:   "Gustavo A. R. Silva" <>
To:     Jamal Hadi Salim <>,
        Cong Wang <>,
        Jiri Pirko <>,
        "David S. Miller" <>,
        Jakub Kicinski <>
        "Gustavo A. R. Silva" <>
Subject: [PATCH][next] net/sched: cls_u32: Use struct_size() in kzalloc()

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <>
 net/sched/cls_u32.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index e15ff335953d..771b068f8254 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -796,9 +796,7 @@ static struct tc_u_knode *u32_init_knode(struct net *net, struct tcf_proto *tp,
 	struct tc_u32_sel *s = &n->sel;
 	struct tc_u_knode *new;
-	new = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key),
-		      GFP_KERNEL);
+	new = kzalloc(struct_size(new, sel.keys, s->nkeys), GFP_KERNEL);
 	if (!new)
 		return NULL;

Powered by blists - more mailing lists