User supplied len < 0 can cause leak of kernel memory.
Use unsigned compare instead.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
return 0;
hdr = opt->hopopt;
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;
if (copy_to_user(optval, hdr, ipv6_optlen(hdr)))
return -EFAULT;
return len;