| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 6.5 21/52] net: ipv4: fix return value check in esp_remove_trailer | Date | Sun, 29 Oct 2023 18:53:08 -0400 |
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From: Ma Ke <make_ruc2021@163.com>
[ Upstream commit 513f61e2193350c7a345da98559b80f61aec4fa6 ]
In esp_remove_trailer(), to avoid an unexpected result returned by pskb_trim, we should check the return value of pskb_trim().
Signed-off-by: Ma Ke <make_ruc2021@163.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/ipv4/esp4.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 2be2d49225573..d18f0f092fe73 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -732,7 +732,9 @@ 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); + ret = pskb_trim(skb, skb->len - trimlen); + if (unlikely(ret)) + return ret; ret = nexthdr[1]; -- 2.42.0
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