lkml.org 
[lkml]   [2019]   [Apr]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v2 net] ipv6: Fix dangling pointer when ipv6 fragment
Date
On Sun, Mar 31, 2019 at 05:04:29PM +0800, hujunwei wrote:
> From: Junwei Hu <hujunwei4@huawei.com>
>
> At the beginning of ip6_fragment func, the prevhdr pointer is
> obtained in the ip6_find_1stfragopt func.
> However, all the pointers pointing into skb header may change
> when calling skb_checksum_help func with
> skb->ip_summed = CHECKSUM_PARTIAL condition.
> The prevhdr pointe will be dangling if it is not reloaded after
> calling __skb_linearize func in skb_checksum_help func.
>
> Here, I add a variable, nexthdr_offset, to evaluate the offset,
> which does not changes even after calling __skb_linearize func.
Acked-by: Martin KaFai Lau <kafai@fb.com>

\
 
 \ /
  Last update: 2019-04-01 18:36    [W:0.085 / U:55.324 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site