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| author | Vasiliy Kulikov <[email protected]> | 2010-11-10 20:09:10 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2010-11-10 20:09:10 +0000 |
| commit | 67286640f638f5ad41a946b9a3dc75327950248f (patch) | |
| tree | 34844d5e00a54f78b384f75f6cded995423d7fc6 /net/ipv4/tcp_input.c | |
| parent | filter: make sure filters dont read uninitialized memory (diff) | |
| download | kernel-67286640f638f5ad41a946b9a3dc75327950248f.tar.gz kernel-67286640f638f5ad41a946b9a3dc75327950248f.zip | |
net: packet: fix information leak to userland
packet_getname_spkt() doesn't initialize all members of sa_data field of
sockaddr struct if strlen(dev->name) < 13. This structure is then copied
to userland. It leads to leaking of contents of kernel stack memory.
We have to fully fill sa_data with strncpy() instead of strlcpy().
The same with packet_getname(): it doesn't initialize sll_pkttype field of
sockaddr_ll. Set it to zero.
Signed-off-by: Vasiliy Kulikov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions