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| author | Sascha Hlusiak <contact@saschahlusiak.de> | 2009-09-29 11:27:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-30 16:39:27 -0700 |
| commit | 298bf12ddb25841804f26234a43b89da1b1c0e21 (patch) | |
| tree | 9a381edac05354fcc7750feb6b30335cd2938726 /net/ipv6/sit.c | |
| parent | d99927f4d93f36553699573b279e0ff98ad7dea6 (diff) | |
| download | linux-3.10-298bf12ddb25841804f26234a43b89da1b1c0e21.tar.gz linux-3.10-298bf12ddb25841804f26234a43b89da1b1c0e21.tar.bz2 linux-3.10-298bf12ddb25841804f26234a43b89da1b1c0e21.zip | |
sit: fix off-by-one in ipip6_tunnel_get_prl
When requesting all prl entries (kprl.addr == INADDR_ANY) and there are
more prl entries than there is space passed from userspace, the existing
code would always copy cmax+1 entries, which is more than can be handled.
This patch makes the kernel copy only exactly cmax entries.
Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Acked-By: Fred L. Templin <Fred.L.Templin@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/sit.c')
| -rw-r--r-- | net/ipv6/sit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index d65e0c496cc..dbd19a78ca7 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -274,7 +274,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t, c = 0; for (prl = t->prl; prl; prl = prl->next) { - if (c > cmax) + if (c >= cmax) break; if (kprl.addr != htonl(INADDR_ANY) && prl->addr != kprl.addr) continue; |