commit: e1082f45f1e2bbf6e25f6b614fc6616ebf709d19 From: Peter Hurley <[email protected]> Date: Fri, 8 Mar 2013 12:43:26 -0800 Subject: ipc: fix potential oops when src msg > 4k w/ MSG_COPY
If the src msg is > 4k, then dest->next points to the next allocated segment; resetting it just prior to dereferencing is bad. Signed-off-by: Peter Hurley <[email protected]> Acked-by: Stanislav Kinsbursky <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> --- ipc/msgutil.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/ipc/msgutil.c b/ipc/msgutil.c index ebfcbfa..5df8e4b 100644 --- a/ipc/msgutil.c +++ b/ipc/msgutil.c @@ -117,9 +117,6 @@ struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst) if (alen > DATALEN_MSG) alen = DATALEN_MSG; - dst->next = NULL; - dst->security = NULL; - memcpy(dst + 1, src + 1, alen); len -= alen; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
