[PATCH 1/1] net: ipv6: check the return value of pskb_trim()
From: Yuanjun Gong <hidden>
Date: 2023-07-17 14:50:43
Subsystem:
networking [general], networking [ipsec], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Steffen Klassert, Herbert Xu, Linus Torvalds
return an error number if an unexpected result is returned by pskb_tirm() in esp_remove_trailer(). Signed-off-by: Yuanjun Gong <redacted> --- net/ipv6/esp6.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index fddd0cbdede1..81111ccadf34 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c@@ -770,7 +770,10 @@ static inline int esp_remove_trailer(struct sk_buff *skb) skb->csum = csum_block_sub(skb->csum, csumdiff, skb->len - trimlen); } - pskb_trim(skb, skb->len - trimlen); + if (pskb_trim(skb, skb->len - trimlen)) { + ret = -EINVAL; + goto out; + } ret = nexthdr[1];
--
2.17.1