Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d2b02ed9487ed25832d19534575052e43f8e0c4f
Commit: d2b02ed9487ed25832d19534575052e43f8e0c4f
Parent: dfee0a725bb027b749ffdd318eb48b91d564b266
Author: Chris Wright <[EMAIL PROTECTED]>
AuthorDate: Fri Mar 9 16:19:17 2007 -0800
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Fri Mar 9 16:19:17 2007 -0800
[IPV6] fix ipv6_getsockopt_sticky copy_to_user leak
User supplied len < 0 can cause leak of kernel memory.
Use unsigned compare instead.
Signed-off-by: Chris Wright <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
net/ipv6/ipv6_sockglue.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index b82333b..f5f9582 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -804,7 +804,7 @@ static int ipv6_getsockopt_sticky(struct sock *sk, struct
ipv6_txoptions *opt,
return 0;
hdr = opt->hopopt;
- len = min_t(int, len, ipv6_optlen(hdr));
+ len = min_t(unsigned int, len, ipv6_optlen(hdr));
if (copy_to_user(optval, hdr, ipv6_optlen(hdr)))
return -EFAULT;
return len;
-
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