diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-14 11:11:44 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2016-05-14 15:04:43 -0400 |
commit | 31b0b385f69d8d5491a4bca288e25e63f1d945d0 (patch) | |
tree | dcfd83aac04a069512c7188769a7fdaa03bef183 /net/ipv4 | |
parent | b91506586206140154b0b44cccf88c8cc0a4dca5 (diff) |
nf_conntrack: avoid kernel pointer value leak in slab name
The slab name ends up being visible in the directory structure under
/sys, and even if you don't have access rights to the file you can see
the filenames.
Just use a 64-bit counter instead of the pointer to the 'net' structure
to generate a unique name.
This code will go away in 4.7 when the conntrack code moves to a single
kmemcache, but this is the backportable simple solution to avoiding
leaking kernel pointers to user space.
Fixes: 5b3501faa874 ("netfilter: nf_conntrack: per netns nf_conntrack_cachep")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
0 files changed, 0 insertions, 0 deletions