Messages in this thread Patch in this message | | | From | Artem Chernyshev <> | Subject | [PATCH v3 2/3] net: dsa: hellcreek: Check return value | Date | Thu, 1 Dec 2022 17:00:31 +0300 |
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Return NULL if we got unexpected value from skb_trim_rcsum() in hellcreek_rcv()
Fixes: 01ef09caad66 ("net: dsa: Add tag handling for Hirschmann Hellcreek switches") Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru> --- V1->V2 Fixes for tag_hellcreek.c and tag_sja1105.c V2->V3 Split patch in 3 separate parts
net/dsa/tag_hellcreek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/dsa/tag_hellcreek.c b/net/dsa/tag_hellcreek.c index 846588c0070a..53a206d11685 100644 --- a/net/dsa/tag_hellcreek.c +++ b/net/dsa/tag_hellcreek.c @@ -49,7 +49,8 @@ static struct sk_buff *hellcreek_rcv(struct sk_buff *skb, return NULL; } - pskb_trim_rcsum(skb, skb->len - HELLCREEK_TAG_LEN); + if (pskb_trim_rcsum(skb, skb->len - HELLCREEK_TAG_LEN)) + return NULL; dsa_default_offload_fwd_mark(skb); -- 2.30.3
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