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authorPaolo Abeni <pabeni@redhat.com>2022-04-22 09:56:00 +0200
committerPaolo Abeni <pabeni@redhat.com>2022-04-22 09:56:00 +0200
commitf70925bf99406150d8133e775e49c9c459f78733 (patch)
tree392dd3854bf229c0c94b481819e4a67551ba6895 /net/netlink
parent9c8774e629a1950c24b44e3c8fb93d76fb644b49 (diff)
parent59f0c2447e2553b0918b4a9fd38763a5c0587d02 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/microchip/lan966x/lan966x_main.c d08ed852560e ("net: lan966x: Make sure to release ptp interrupt") c8349639324a ("net: lan966x: Add FDMA functionality") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/netlink')
-rw-r--r--net/netlink/af_netlink.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 9fa85bb36c0e..1b5a9c2e1c29 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2262,6 +2262,13 @@ static int netlink_dump(struct sock *sk)
* single netdev. The outcome is MSG_TRUNC error.
*/
skb_reserve(skb, skb_tailroom(skb) - alloc_size);
+
+ /* Make sure malicious BPF programs can not read unitialized memory
+ * from skb->head -> skb->data
+ */
+ skb_reset_network_header(skb);
+ skb_reset_mac_header(skb);
+
netlink_skb_set_owner_r(skb, sk);
if (nlk->dump_done_errno > 0) {