1 files changed, 39 insertions, 0 deletions
diff --git a/meta-networking/recipes-connectivity/samba/samba/CVE-2022-3437-0007.patch b/meta-networking/recipes-connectivity/samba/samba/CVE-2022-3437-0007.patch
new file mode 100644
index 0000000000..b3197afc34
--- /dev/null
+++ b/meta-networking/recipes-connectivity/samba/samba/CVE-2022-3437-0007.patch
@@ -0,0 +1,39 @@
+From c8407ca079294d76a5ed140ba5b546f870d23ed2 Mon Sep 17 00:00:00 2001
+From: Joseph Sutton <josephsutton@catalyst.net.nz>
+Date: Mon, 10 Oct 2022 20:33:09 +1300
+Subject: [PATCH] gsskrb5: CVE-2022-3437 Check for overflow in
+ _gsskrb5_get_mech()
+
+If len_len is equal to total_len - 1 (i.e. the input consists only of a
+0x60 byte and a length), the expression 'total_len - 1 - len_len - 1',
+used as the 'len' parameter to der_get_length(), will overflow to
+SIZE_MAX. Then der_get_length() will proceed to read, unconstrained,
+whatever data follows in memory. Add a check to ensure that doesn't
+happen.
+
+Samba BUG: https://bugzilla.samba.org/show_bug.cgi?id=15134
+
+Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
+Reviewed-by: Andrew Bartlett <abartlet@samba.org>
+
+Upstream-Status: Backport [https://github.com/heimdal/heimdal/commit/c8407ca079294d76a5ed140ba5b546f870d23ed2]
+CVE: CVE-2022-3437
+
+Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
+---
+ lib/gssapi/krb5/decapsulate.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/gssapi/krb5/decapsulate.c b/lib/gssapi/krb5/decapsulate.c
+index 031a621eab..d7b75a6422 100644
+--- a/lib/gssapi/krb5/decapsulate.c
++++ b/lib/gssapi/krb5/decapsulate.c
+@@ -54,6 +54,8 @@ _gsskrb5_get_mech (const u_char *ptr,
+     e = der_get_length (p, total_len - 1, &len, &len_len);
+     if (e || 1 + len_len + len != total_len)
+	return -1;
++    if (total_len < 1 + len_len + 1)
++	return -1;
+     p += len_len;
+     if (*p++ != 0x06)
+	return -1;