diff options
Diffstat (limited to 'meta/recipes-connectivity/connman/connman/CVE-2022-23098.patch')
-rw-r--r-- | meta/recipes-connectivity/connman/connman/CVE-2022-23098.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/connman/connman/CVE-2022-23098.patch b/meta/recipes-connectivity/connman/connman/CVE-2022-23098.patch new file mode 100644 index 0000000000..a40c9f583f --- /dev/null +++ b/meta/recipes-connectivity/connman/connman/CVE-2022-23098.patch | |||
@@ -0,0 +1,50 @@ | |||
1 | From d8708b85c1e8fe25af7803e8a20cf20e7201d8a4 Mon Sep 17 00:00:00 2001 | ||
2 | From: Matthias Gerstner <mgerstner@suse.de> | ||
3 | Date: Tue, 25 Jan 2022 10:00:25 +0100 | ||
4 | Subject: dnsproxy: Avoid 100 % busy loop in TCP server case | ||
5 | |||
6 | Once the TCP socket is connected and until the remote server is | ||
7 | responding (if ever) ConnMan executes a 100 % CPU loop, since | ||
8 | the connected socket will always be writable (G_IO_OUT). | ||
9 | |||
10 | To fix this, modify the watch after the connection is established to | ||
11 | remove the G_IO_OUT from the callback conditions. | ||
12 | |||
13 | Fixes: CVE-2022-23098 | ||
14 | |||
15 | Upstream-Status: Backport | ||
16 | https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=d8708b85c1e8fe25af7803e8a20cf20e7201d8a4 | ||
17 | |||
18 | CVE: CVE-2022-23098 | ||
19 | Signed-off-by: Steve Sakoman <steve@sakoman.com> | ||
20 | |||
21 | --- | ||
22 | src/dnsproxy.c | 12 ++++++++++++ | ||
23 | 1 file changed, 12 insertions(+) | ||
24 | |||
25 | diff --git a/src/dnsproxy.c b/src/dnsproxy.c | ||
26 | index c027bcb9..1ccf36a9 100644 | ||
27 | --- a/src/dnsproxy.c | ||
28 | +++ b/src/dnsproxy.c | ||
29 | @@ -2360,6 +2360,18 @@ hangup: | ||
30 | } | ||
31 | } | ||
32 | |||
33 | + /* | ||
34 | + * Remove the G_IO_OUT flag from the watch, otherwise we end | ||
35 | + * up in a busy loop, because the socket is constantly writable. | ||
36 | + * | ||
37 | + * There seems to be no better way in g_io to do that than | ||
38 | + * re-adding the watch. | ||
39 | + */ | ||
40 | + g_source_remove(server->watch); | ||
41 | + server->watch = g_io_add_watch(server->channel, | ||
42 | + G_IO_IN | G_IO_HUP | G_IO_NVAL | G_IO_ERR, | ||
43 | + tcp_server_event, server); | ||
44 | + | ||
45 | server->connected = true; | ||
46 | server_list = g_slist_append(server_list, server); | ||
47 | |||
48 | -- | ||
49 | cgit 1.2.3-1.el7 | ||
50 | |||