Commit e1082f45 authored by Peter Hurley's avatar Peter Hurley Committed by Linus Torvalds

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: default avatarPeter Hurley <peter@hurleysoftware.com>
Acked-by: default avatarStanislav Kinsbursky <skinsbursky@parallels.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 47b3bc90
...@@ -117,9 +117,6 @@ struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst) ...@@ -117,9 +117,6 @@ struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst)
if (alen > DATALEN_MSG) if (alen > DATALEN_MSG)
alen = DATALEN_MSG; alen = DATALEN_MSG;
dst->next = NULL;
dst->security = NULL;
memcpy(dst + 1, src + 1, alen); memcpy(dst + 1, src + 1, alen);
len -= alen; len -= alen;
......
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