| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.19 022/123] net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom | Date | Tue, 24 Mar 2015 16:45:31 +0100 |
| |
3.19-stable review patch. If anyone has any objections, please let me know.
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From: Al Viro <viro@ZenIV.linux.org.uk>
commit 4de930efc23b92ddf88ce91c405ee645fe6e27ea upstream.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- net/socket.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/net/socket.c +++ b/net/socket.c @@ -1765,6 +1765,8 @@ SYSCALL_DEFINE6(sendto, int, fd, void __ if (len > INT_MAX) len = INT_MAX; + if (unlikely(!access_ok(VERIFY_READ, buff, len))) + return -EFAULT; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; @@ -1823,6 +1825,8 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void if (size > INT_MAX) size = INT_MAX; + if (unlikely(!access_ok(VERIFY_WRITE, ubuf, size))) + return -EFAULT; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out;
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