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| author | Eric Dumazet <edumazet@google.com> | 2016-12-02 09:44:53 -0800 |
|---|---|---|
| committer | Min Chong <mchong@google.com> | 2017-01-10 09:53:11 -0800 |
| commit | 1475f79c87f07664f9af64f5d2e77d360855ac28 (patch) | |
| tree | 77ea7d9ca2448dea1a55abc85107a99da0bc9a68 /net/unix/af_unix.c | |
| parent | 3e61a942c7eb5378c2a1c31bc3236995b3bdf7f2 (diff) | |
UPSTREAM: net: avoid signed overflows for SO_{SND|RCV}BUFFORCE
(cherry picked from commit b98b0bc8c431e3ceb4b26b0dfc8db509518fb290)
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>
Change-Id: I2b621c28c02267af5b34a379b2970fe5fb61a4f6
Bug: 33363517
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions