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| author | Eric Dumazet <edumazet@google.com> | 2016-11-02 07:53:17 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-03 15:33:30 -0400 |
| commit | ac9e70b17ecd7c6e933ff2eaf7ab37429e71bf4d (patch) | |
| tree | 781677be717b11066e303449ee4abd787048816e /include/linux/ipv6.h | |
| parent | 9512925a2cc2b1cd0206bb93bad200a69716f998 (diff) | |
| download | lwn-ac9e70b17ecd7c6e933ff2eaf7ab37429e71bf4d.tar.gz lwn-ac9e70b17ecd7c6e933ff2eaf7ab37429e71bf4d.zip | |
tcp: fix potential memory corruption
Imagine initial value of max_skb_frags is 17, and last
skb in write queue has 15 frags.
Then max_skb_frags is lowered to 14 or smaller value.
tcp_sendmsg() will then be allowed to add additional page frags
and eventually go past MAX_SKB_FRAGS, overflowing struct
skb_shared_info.
Fixes: 5f74f82ea34c ("net:Add sysctl_max_skb_frags")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Westgaard Ry <hans.westgaard.ry@oracle.com>
Cc: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ipv6.h')
0 files changed, 0 insertions, 0 deletions