This is a note to let you know that I've just added the patch titled net: ipv6: fix return value check in esp_remove_trailer to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ipv6-fix-return-value-check-in-esp_remove_trailer.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From dad4e491e30b20f4dc615c9da65d2142d703b5c2 Mon Sep 17 00:00:00 2001 From: Ma Ke <make_ruc2021@xxxxxxx> Date: Sat, 7 Oct 2023 08:59:53 +0800 Subject: net: ipv6: fix return value check in esp_remove_trailer From: Ma Ke <make_ruc2021@xxxxxxx> commit dad4e491e30b20f4dc615c9da65d2142d703b5c2 upstream. 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@xxxxxxx> Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv6/esp6.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -770,7 +770,9 @@ static inline int esp_remove_trailer(str 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]; Patches currently in stable-queue which might be from make_ruc2021@xxxxxxx are queue-6.1/net-ipv4-fix-return-value-check-in-esp_remove_trailer.patch queue-6.1/net-ipv6-fix-return-value-check-in-esp_remove_trailer.patch