connman: fix CVE-2022-32292

(From OE-Core rev: 380b6fb2583f875aad0cb28c91b1531e63eb2eeb)

Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/connman/connman/CVE-2022-32292.patch b/meta/recipes-connectivity/connman/connman/CVE-2022-32292.patch
new file mode 100644
index 0000000000..74a739d6a2
--- /dev/null
+++ b/meta/recipes-connectivity/connman/connman/CVE-2022-32292.patch
@@ -0,0 +1,37 @@
+From d1a5ede5d255bde8ef707f8441b997563b9312bd Mon Sep 17 00:00:00 2001
+From: Nathan Crandall <ncrandall@tesla.com>
+Date: Tue, 12 Jul 2022 08:56:34 +0200
+Subject: gweb: Fix OOB write in received_data()
+
+There is a mismatch of handling binary vs. C-string data with memchr
+and strlen, resulting in pos, count, and bytes_read to become out of
+sync and result in a heap overflow.  Instead, do not treat the buffer
+as an ASCII C-string. We calculate the count based on the return value
+of memchr, instead of strlen.
+
+Fixes: CVE-2022-32292
+
+Upstream-Status: Backport
+https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=d1a5ede5d255bde8ef707f8441b997563b9312b
+CVE: CVE-2022-32292
+Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
+---
+ gweb/gweb.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gweb/gweb.c b/gweb/gweb.c
+index 12fcb1d8..13c6c5f2 100644
+--- a/gweb/gweb.c
++++ b/gweb/gweb.c
+@@ -918,7 +918,7 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
+                }
+ 
+                *pos = '\0';
+-               count = strlen((char *) ptr);
++               count = pos - ptr;
+                if (count > 0 && ptr[count - 1] == '\r') {
+                        ptr[--count] = '\0';
+                        bytes_read--;
+-- 
+cgit 
+