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| author | Eric Dumazet <[email protected]> | 2016-12-02 17:44:53 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2016-12-02 19:10:14 +0000 |
| commit | b98b0bc8c431e3ceb4b26b0dfc8db509518fb290 (patch) | |
| tree | 1df6d58e0f2c836a2808658830a3425e169645e6 /net/dsa/dsa2.c | |
| parent | geneve: avoid use-after-free of skb->data (diff) | |
| download | kernel-b98b0bc8c431e3ceb4b26b0dfc8db509518fb290.tar.gz kernel-b98b0bc8c431e3ceb4b26b0dfc8db509518fb290.zip | |
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 <[email protected]>
Reported-by: Andrey Konovalov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/dsa/dsa2.c')
0 files changed, 0 insertions, 0 deletions