5.4-stable review patch. If anyone has any objections, please let me know.
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From: Haoxiang Li haoxiang_li2024@163.com
commit 878e7b11736e062514e58f3b445ff343e6705537 upstream.
Add check for the return value of nfp_app_ctrl_msg_alloc() in nfp_bpf_cmsg_alloc() to prevent null pointer dereference.
Fixes: ff3d43f7568c ("nfp: bpf: implement helpers for FW map ops") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com Link: https://patch.msgid.link/20250218030409.2425798-1-haoxiang_li2024@163.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/netronome/nfp/bpf/cmsg.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c @@ -20,6 +20,8 @@ nfp_bpf_cmsg_alloc(struct nfp_app_bpf *b struct sk_buff *skb;
skb = nfp_app_ctrl_msg_alloc(bpf->app, size, GFP_KERNEL); + if (!skb) + return NULL; skb_put(skb, size);
return skb;