package/rtl_433: fix CVE-2022-27419

rtl_433 21.12 was discovered to contain a stack overflow in the function
acurite_00275rm_decode at /devices/acurite.c. This vulnerability allows
attackers to cause a Denial of Service (DoS) via a crafted file.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit ba317308439cec343d1c4844c802e17843808162)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/rtl_433/0004-Fix-overflow-in-Acurite-00275rm.patch

@@ -0,0 +1,35 @@
+From 37455483889bd1c641bdaafc493d1cc236b74904 Mon Sep 17 00:00:00 2001
+From: "Christian W. Zuckschwerdt" <christian@zuckschwerdt.org>
+Date: Fri, 18 Mar 2022 08:09:15 +0100
+Subject: [PATCH] Fix overflow in Acurite-00275rm (closes #2012)
+
+[Retrieved from:
+https://github.com/merbanan/rtl_433/commit/37455483889bd1c641bdaafc493d1cc236b74904]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ src/devices/acurite.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/devices/acurite.c b/src/devices/acurite.c
+index 6879e52da..4f3e83eb3 100644
+--- a/src/devices/acurite.c
++++ b/src/devices/acurite.c
+@@ -1318,15 +1318,15 @@ static int acurite_00275rm_decode(r_device *decoder, bitbuffer_t *bitbuffer)
+ 
+     // Combine signal if exactly three repeats were found
+     if (n_rows == 3) {
+-        uint8_t *b = bitbuffer->bb[bitbuffer->num_rows];
++        bitbuffer_add_row(bitbuffer);
++        uint8_t *b = bitbuffer->bb[bitbuffer->num_rows - 1];
+         for (int i = 0; i < 11; ++i) {
+             // The majority bit count wins
+             b[i] = (b_rows[0][i] & b_rows[1][i]) |
+                     (b_rows[1][i] & b_rows[2][i]) |
+                     (b_rows[2][i] & b_rows[0][i]);
+         }
+-        bitbuffer->bits_per_row[bitbuffer->num_rows] = 88;
+-        bitbuffer->num_rows += 1;
++        bitbuffer->bits_per_row[bitbuffer->num_rows - 1] = 88;
+     }
+ 
+     // Output the first valid row

package/rtl_433/rtl_433.mk

@@ -20,6 +20,9 @@ RTL_433_CONF_OPTS = \
 # 0003-minor-Fix-overflow-in-Clipsal-CMR113-and-Somfy-IOHC.patch
 RTL_433_IGNORE_CVES += CVE-2022-25051
 
+# 0004-Fix-overflow-in-Acurite-00275rm.patch
+RTL_433_IGNORE_CVES += CVE-2022-27419
+
 ifeq ($(BR2_PACKAGE_LIBRTLSDR),y)
 RTL_433_DEPENDENCIES += librtlsdr
 RTL_433_CONF_OPTS += -DENABLE_RTLSDR=ON