MIRRORS/poky
1
0
Fork 0
mirror of git://git.yoctoproject.org/poky.git synced 2025-07-19 12:59:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

connman: Fix CVE-2025-32743

Browse Source 
In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c
can be NULL or an empty string when the TC (Truncated) bit is set in
a DNS response. This allows attackers to cause a denial of service
(application crash) or possibly execute arbitrary code, because those
lookup values lead to incorrect length calculations and incorrect
memcpy operations.

Reference:
https://nvd.nist.gov/vuln/detail/CVE-2025-32743

Upstream-patch:
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=d90b911f6760959bdf1393c39fe8d1118315490f

(From OE-Core rev: 610056dccc7144a70bcf69aec720b44bc7de7557)

Signed-off-by: Praveen Kumar <praveen.kumar@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Praveen Kumar 2025-05-07 06:48:23 +00:00 committed by Richard Purdie
parent a48e688361
commit 534f92cb0a
2 changed files with 49 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
meta/recipes-connectivity/connman/connman/CVE-2025-32743.patch Normal file
View File

@ -0,0 +1,48 @@
From d90b911f6760959bdf1393c39fe8d1118315490f Mon Sep 17 00:00:00 2001
From: Praveen Kumar <praveen.kumar@windriver.com>
Date: Thu, 24 Apr 2025 11:39:29 +0000
Subject: [PATCH] dnsproxy: Fix NULL/empty lookup causing potential crash
In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c
can be NULL or an empty string when the TC (Truncated) bit is set in
a DNS response. This allows attackers to cause a denial of service
(application crash) or possibly execute arbitrary code, because those
lookup values lead to incorrect length calculations and incorrect
memcpy operations.
This patch includes a check to make sure loookup value is valid before
using it. This helps avoid unexpected value when the input is empty or
incorrect.
Fixes: CVE-2025-32743
CVE: CVE-2025-32743
Upstream-Status: Backport [https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=d90b911f6760959bdf1393c39fe8d1118315490f]
Signed-off-by: Praveen Kumar <praveen.kumar@windriver.com>
---
src/dnsproxy.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/dnsproxy.c b/src/dnsproxy.c
index f28a5d7..7ee26d9 100644
--- a/src/dnsproxy.c
+++ b/src/dnsproxy.c
@@ -1685,8 +1685,13 @@ static int ns_resolv(struct server_data *server, struct request_data *req,
gpointer request, gpointer name)
{
int sk = -1;
+ int err;
const char *lookup = (const char *)name;
- int err = ns_try_resolv_from_cache(req, request, lookup);
+
+ if (!lookup || strlen(lookup) == 0)
+ return -EINVAL;
+
+ err = ns_try_resolv_from_cache(req, request, lookup);
if (err > 0)
/* cache hit */
--
2.40.0

1
meta/recipes-connectivity/connman/connman_1.44.bb
View File

@ -21,6 +21,7 @@ DEPENDS = "dbus glib-2.0"
SRC_URI = "${KERNELORG_MIRROR}/linux/network/${BPN}/${BP}.tar.xz \
file://connman \
file://0002-resolve-musl-does-not-implement-res_ninit.patch \
file://CVE-2025-32743.patch \
"
SRC_URI[sha256sum] = "2be2b00321632b775f9eff713acd04ef21e31fbf388f6ebf45512ff4289574ff"