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| author | Alan Coopersmith <alan.coopersmith@oracle.com> | 2022-04-30 15:04:53 -0700 |
|---|---|---|
| committer | Alan Coopersmith <alan.coopersmith@oracle.com> | 2022-04-30 15:04:53 -0700 |
| commit | d70c666549a9ee17de7349904529cf41bf023926 (patch) | |
| tree | 15866f26bd7718995703977231512908602592dc | |
| parent | 8d2cb9e7a897a070b2509f9de60961c9d154ee99 (diff) | |
| download | xorg-lib-libICE-d70c666549a9ee17de7349904529cf41bf023926.tar.gz | |
ConnectToPeer: be doubly sure that use-after-free doesn't happen
This resolves an issue reported by the Oracle Parfait static analyzer:
Error: Use after free
Use after free [use-after-free] (CWE 416):
Use after free of pointer trans_conn
at line 566 of lib/libICE/src/connect.c in function 'ConnectToPeer'.
trans_conn previously freed with _IceTransClose at line 532
trans_conn was allocated at line 525 with _IceTransOpenCOTSClient
even though I believe this is already handled by the
'if (madeConnection) { ... } else trans_conn = NULL;'
block, but the analyzer apparently doesn't follow that logic,
while this simple change makes it obvious.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
| -rw-r--r-- | src/connect.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/connect.c b/src/connect.c index b39ca3c..b52b566 100644 --- a/src/connect.c +++ b/src/connect.c @@ -530,6 +530,7 @@ ConnectToPeer (char *networkIdsList, char **actualConnectionRet) if ((connect_stat = _IceTransConnect (trans_conn, address)) < 0) { _IceTransClose (trans_conn); + trans_conn = NULL; if (connect_stat == TRANS_TRY_CONNECT_AGAIN) { |