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| author | Eric Dumazet <edumazet@google.com> | 2016-12-02 09:44:53 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-02 14:10:14 -0500 |
| commit | b98b0bc8c431e3ceb4b26b0dfc8db509518fb290 (patch) | |
| tree | 1df6d58e0f2c836a2808658830a3425e169645e6 /net/sched/cls_tcindex.c | |
| parent | 5b01014759991887b1e450c9def01e58c02ab81b (diff) | |
| download | linux-b98b0bc8c431e3ceb4b26b0dfc8db509518fb290.tar.bz2 | |
net: avoid signed overflows for SO_{SND|RCV}BUFFORCE
CAP_NET_ADMIN users should not be allowed to set negative
sk_sndbuf or sk_rcvbuf values, as it can lead to various memory
corruptions, crashes, OOM...
Note that before commit 82981930125a ("net: cleanups in
sock_setsockopt()"), the bug was even more serious, since SO_SNDBUF
and SO_RCVBUF were vulnerable.
This needs to be backported to all known linux kernels.
Again, many thanks to syzkaller team for discovering this gem.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_tcindex.c')
0 files changed, 0 insertions, 0 deletions