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| author | Eric Dumazet | 2019-06-08 19:22:49 +0200 |
|---|---|---|
| committer | David S. Miller | 2019-06-16 03:47:31 +0200 |
| commit | 967c05aee439e6e5d7d805e195b3a20ef5c433d6 (patch) | |
| tree | 564caa19735a085c9722d4fb8c184cc23dc7f012 /net/ipv4/tcp.c | |
| parent | tcp: add tcp_min_snd_mss sysctl (diff) | |
| download | kernel-qcow2-linux-967c05aee439e6e5d7d805e195b3a20ef5c433d6.tar.gz kernel-qcow2-linux-967c05aee439e6e5d7d805e195b3a20ef5c433d6.tar.xz kernel-qcow2-linux-967c05aee439e6e5d7d805e195b3a20ef5c433d6.zip | |
tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
If mtu probing is enabled tcp_mtu_probing() could very well end up
with a too small MSS.
Use the new sysctl tcp_min_snd_mss to make sure MSS search
is performed in an acceptable range.
CVE-2019-11479 -- tcp mss hardcoded to 48
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Cc: Jonathan Looney <jtl@netflix.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Bruce Curtis <brucec@netflix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
0 files changed, 0 insertions, 0 deletions