mcstrans/0004-mcstrans-fix-RESOURCE_LEAK-CWE-772.patch
Petr Lautrbach 51b0210f5f SELinux userspace 3.3-rc2 release
Resolves: rhbz#2003554
2021-09-30 18:29:34 +02:00

64 lines
2.5 KiB
Diff

From a98f2f8f2f1c14646ec9c80faecf14e9bf4bbd2c Mon Sep 17 00:00:00 2001
From: Petr Lautrbach <plautrba@redhat.com>
Date: Thu, 5 Aug 2021 16:26:44 +0200
Subject: [PATCH] mcstrans: fix RESOURCE_LEAK (CWE-772)
Fixes:
Error: RESOURCE_LEAK (CWE-772): [#def1]
mcstrans-3.2/src/mcstrans.c:1527: alloc_fn: Storage is returned from allocation function "compute_trans_from_raw".
mcstrans-3.2/src/mcstrans.c:1527: var_assign: Assigning: "trans" = storage returned from "compute_trans_from_raw(range, domain)".
mcstrans-3.2/src/mcstrans.c:1529: noescape: Resource "trans" is not freed or pointed-to in "add_cache".
mcstrans-3.2/src/mcstrans.c:1515: overwrite_var: Overwriting "trans" in "trans = find_in_hashtable(range, domain, domain->raw_to_trans)" leaks the storage that "trans" points to.
# 1513| domain_t *domain = domains;
# 1514| for (;domain; domain = domain->next) {
# 1515|-> trans = find_in_hashtable(range, domain, domain->raw_to_trans);
# 1516| if (trans) break;
# 1517|
Error: RESOURCE_LEAK (CWE-772): [#def2]
mcstrans-3.2/src/mcstrans.c:1654: alloc_fn: Storage is returned from allocation function "compute_raw_from_trans".
mcstrans-3.2/src/mcstrans.c:1654: var_assign: Assigning: "raw" = storage returned from "compute_raw_from_trans(range, domain)".
mcstrans-3.2/src/mcstrans.c:1656: noescape: Resource "raw" is not freed or pointed-to in "find_in_hashtable".
mcstrans-3.2/src/mcstrans.c:1669: noescape: Resource "raw" is not freed or pointed-to in "add_cache".
mcstrans-3.2/src/mcstrans.c:1642: overwrite_var: Overwriting "raw" in "raw = find_in_hashtable(range, domain, domain->trans_to_raw)" leaks the storage that "raw" points to.
# 1640| domain_t *domain = domains;
# 1641| for (;domain; domain = domain->next) {
# 1642|-> raw = find_in_hashtable(range, domain, domain->trans_to_raw);
# 1643| if (raw) break;
# 1644|
Signed-off-by: Petr Lautrbach <plautrba@redhat.com>
---
mcstrans/src/mcstrans.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/mcstrans/src/mcstrans.c b/mcstrans/src/mcstrans.c
index 8678418a1570..4e110e02f73a 100644
--- a/mcstrans/src/mcstrans.c
+++ b/mcstrans/src/mcstrans.c
@@ -1598,6 +1598,10 @@ trans_context(const char *incon, char **rcon) {
}
if (dashp)
*dashp = '-';
+ if (trans) {
+ free(trans);
+ trans = NULL;
+ }
}
if (trans) {
@@ -1769,6 +1773,10 @@ untrans_context(const char *incon, char **rcon) {
}
if (dashp)
*dashp = '-';
+ if (raw) {
+ free(raw);
+ raw = NULL;
+ }
}
if (raw) {
--
2.32.0