diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-03-08 12:43:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-14 11:26:24 -0700 |
| commit | 32b25b63c222ff910834d577a6baa1f5a39b0a06 (patch) | |
| tree | 9e82ca955359f7bad6a4796decd8ab0a56f38164 /ipc | |
| parent | aaf4a8519e2582203e6de1f2e2b21954c68dca7a (diff) | |
ipc: fix potential oops when src msg > 4k w/ MSG_COPY
commit e1082f45f1e2bbf6e25f6b614fc6616ebf709d19 upstream.
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 <peter@hurleysoftware.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/msgutil.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/ipc/msgutil.c b/ipc/msgutil.c index ebfcbfa8b7f2..5df8e4bf1db0 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; |