jq: Fix CVE-2026-43896

The upstream fix [3] is for a newer jq codebase. Debian has already
backported this fix in jq 1.8.1-7. Use the Debian patch [1], which fixes
this CVE as tracked in Debian bug #1136445 [2].

[1] https://sources.debian.org/src/jq/1.8.1-7/debian/patches/CVE-2026-43896.patch
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136445
[3] https://github.com/jqlang/jq/commit/532ccea6080ed6758f39fe9f6208a44b665023d2

Reference:
https://github.com/jqlang/jq/security/advisories/GHSA-mg96-6h3q-g846

Signed-off-by: Shubham Pushpkar <spushpka@cisco.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>

meta-oe/recipes-devtools/jq/jq/CVE-2026-43896.patch

@@ -0,0 +1,73 @@
+From 532ccea6080ed6758f39fe9f6208a44b665023d2 Mon Sep 17 00:00:00 2001
+From: itchyny <itchyny@cybozu.co.jp>
+Date: Tue, 5 May 2026 22:44:02 +0900
+Subject: [PATCH] Limit recursive object merge depth to prevent stack overflow
+
+This fixes CVE-2026-43896.
+
+CVE: CVE-2026-43896
+Upstream-Status: Backport [https://github.com/jqlang/jq/commit/532ccea6080ed6758f39fe9f6208a44b665023d2]
+
+Backport Changes:
+- Dropped the duplicate tests/jq.test hunk because Wrynose already carries
+  the same regression coverage in existing CVE-2026-47770.patch.
+
+(cherry picked from commit 532ccea6080ed6758f39fe9f6208a44b665023d2)
+Signed-off-by: Shubham Pushpkar <spushpka@cisco.com>
+---
+ src/jv.c | 25 +++++++++++++++++++++++--
+ 1 file changed, 23 insertions(+), 2 deletions(-)
+
+diff --git a/src/jv.c b/src/jv.c
+index 34573b8..b112757 100644
+--- a/src/jv.c
++++ b/src/jv.c
+@@ -1884,16 +1884,33 @@ jv jv_object_merge(jv a, jv b) {
+   return a;
+ }
+
+-jv jv_object_merge_recursive(jv a, jv b) {
++#ifndef MAX_OBJECT_MERGE_DEPTH
++#define MAX_OBJECT_MERGE_DEPTH (10000)
++#endif
++
++static jv jvp_object_merge_recursive(jv a, jv b, int depth) {
+   assert(JVP_HAS_KIND(a, JV_KIND_OBJECT));
+   assert(JVP_HAS_KIND(b, JV_KIND_OBJECT));
+
++  if (depth > MAX_OBJECT_MERGE_DEPTH) {
++    jv_free(a);
++    jv_free(b);
++    return jv_invalid_with_msg(jv_string("Object merge too deep"));
++  }
++
+   jv_object_foreach(b, k, v) {
+     jv elem = jv_object_get(jv_copy(a), jv_copy(k));
+     if (jv_is_valid(elem) &&
+         JVP_HAS_KIND(elem, JV_KIND_OBJECT) &&
+         JVP_HAS_KIND(v, JV_KIND_OBJECT)) {
+-      a = jv_object_set(a, k, jv_object_merge_recursive(elem, v));
++      jv merged = jvp_object_merge_recursive(elem, v, depth + 1);
++      if (!jv_is_valid(merged)) {
++        jv_free(k);
++        jv_free(a);
++        jv_free(b);
++        return merged;
++      }
++      a = jv_object_set(a, k, merged);
+     } else {
+       jv_free(elem);
+       a = jv_object_set(a, k, v);
+@@ -1904,6 +1921,10 @@ jv jv_object_merge_recursive(jv a, jv b) {
+   return a;
+ }
+
++jv jv_object_merge_recursive(jv a, jv b) {
++  return jvp_object_merge_recursive(a, b, 0);
++}
++
+ /*
+  * Object iteration (internal helpers)
+  */
+--
+2.44.4

meta-oe/recipes-devtools/jq/jq_1.8.1.bb

@@ -22,6 +22,7 @@ SRC_URI = "git://github.com/jqlang/jq.git;protocol=https;branch=master;tag=jq-${
            file://CVE-2026-41256.patch \
            file://CVE-2026-41257.patch \
            file://CVE-2026-43894.patch \
+           file://CVE-2026-43896.patch \
            "
 
 inherit autotools ptest