systemd/SOURCES/0311-sd-bus-initialize-mutex-after-we-allocated-the-wqueu.patch
2021-09-10 05:03:39 +00:00

34 lines
1.2 KiB
Diff

From 247d4f826ab189c4dfc4706aaa94782342655218 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 17 Jan 2019 21:06:30 +0100
Subject: [PATCH] sd-bus: initialize mutex after we allocated the wqueue
That way the mutex doesn't have to be destroyed when we exit early due
to OOM.
(cherry picked from commit 2fe9a10d7695c4c3a748969a0d1662c624e50e5e)
Related: CVE-2020-1712
---
src/libsystemd/sd-bus/sd-bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 01060d105c..e49d58137d 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -248,12 +248,12 @@ _public_ int sd_bus_new(sd_bus **ret) {
b->original_pid = getpid_cached();
b->n_groups = (size_t) -1;
- assert_se(pthread_mutex_init(&b->memfd_cache_mutex, NULL) == 0);
-
/* We guarantee that wqueue always has space for at least one entry */
if (!GREEDY_REALLOC(b->wqueue, b->wqueue_allocated, 1))
return -ENOMEM;
+ assert_se(pthread_mutex_init(&b->memfd_cache_mutex, NULL) == 0);
+
*ret = TAKE_PTR(b);
return 0;
}