busybox: patch CVE-2025-60876

Although the patch was not merged yet, Debian already took it ([1]).
Since busybox CVE handling is slow, follow Debian decision.

[1] https://sources.debian.org/src/busybox/1:1.37.0-10.1/debian/patches/wget-disallow-control-chars-in-URLs-CVE-2025-60876.patch

(From OE-Core rev: 6274e354680db9521d188309cb32d90996ebb3e5)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Fabien Thomas <fabien.thomas@smile.fr>
[YC: fixed weird encoding in URL, added "CVE-" to subject]
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>

meta/recipes-core/busybox/busybox/CVE-2025-60876.patch

@@ -0,0 +1,38 @@
+From 32c0f6f240fcb041ae7df44a9bbf958d627a8212 Mon Sep 17 00:00:00 2001
+From: Radoslav Kolev <radoslav.kolev@suse.com>
+Date: Fri, 21 Nov 2025 11:21:18 +0200
+Subject: [PATCH] wget: don't allow control characters or spaces in the URL
+
+Fixes CVE-2025-60876 malicious URL can be used to inject
+HTTP headers in the request.
+
+Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
+Reviewed-by: Emmanuel Deloget <logout@free.fr>
+
+CVE: CVE-2025-60876
+Upstream-Status: Submitted [https://lists.busybox.net/pipermail/busybox/2025-November/091840.html]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ networking/wget.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/networking/wget.c b/networking/wget.c
+index 9ec0e67..7602563 100644
+--- a/networking/wget.c
++++ b/networking/wget.c
+@@ -536,6 +536,15 @@ static void parse_url(const char *src_url, struct host_info *h)
+ {
+ 	char *url, *p, *sp;
+ 
++	/* Fix for CVE-2025-60876 - don't allow control characters or spaces in the URL */
++	/* otherwise a malicious URL can be used to inject HTTP headers in the request */
++	const unsigned char *u = (void *) src_url;
++	while (*u) {
++		if (*u <= ' ')
++			bb_simple_error_msg_and_die("Unencoded control character found in the URL!");
++		u++;
++	}
++
+ 	free(h->allocated);
+ 	h->allocated = url = xstrdup(src_url);
+ 

meta/recipes-core/busybox/busybox_1.35.0.bb

@@ -61,6 +61,7 @@ SRC_URI = "https://busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
            file://CVE-2023-39810.patch \
            file://CVE-2025-46394-01.patch \
            file://CVE-2025-46394-02.patch \
+           file://CVE-2025-60876.patch \
            "
 SRC_URI:append:libc-musl = " file://musl.cfg "