Linux内核高危漏洞:一命令可攻擊所有Li … - Linux

關於這個bug的patch

網址:http://tinyurl.com/ostlja

author Linus Torvalds <[email protected]>
Thu, 13 Aug 2009 15:28:36 +0000 (08:28 -0700)
committer Linus Torvalds <[email protected]>
Thu, 13 Aug 2009 17:57:26 +0000 (10:57 -0700)

Make sock_sendpage() use kernel_sendpage()

kernel_sendpage() does the proper default case handling for when the
socket doesn't have a native sendpage implementation.

Now, arguably this might be something that we could instead solve by
just specifying that all protocols should do it themselves at the
protocol level, but we really only care about the common protocols.
Does anybody really care about sendpage on something like Appletalk? Not
likely.

PATCH的內容:

diff --git a/net/socket.c b/net/socket.c
index 791d71a..6d47165 100644 (file)

--- a/net/socket.c
+++ b/net/socket.c
@@ -736,7 +736,7 @@ static ssize_t sock_sendpage(struct file *file, struct \
page *page,
if (more)
flags |= MSG_MORE;

- return sock->ops->sendpage(sock, page, offset, size, flags);
+ return kernel_sendpage(sock, page, offset, size, flags);
}
static ssize_t sock_splice_read(struct file *file, loff_t *ppos,


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