busybox: Fixes CVE-2025-60876

This addresses CVE-2025-60876[1], which allows malicious URLs to inject
HTTP headers. It has been accepted by Debian[2] and is tracked here [4].
The upstream fix has been submitted [3] and is pending merge.

[1] https://nvd.nist.gov/vuln/detail/CVE-2025-60876
[2] https://bugs.debian.org/1120795
[3] https://lists.busybox.net/pipermail/busybox/2025-November/091840.html
[4] https://security-tracker.debian.org/tracker/CVE-2025-60876

Upstream-Status: Submitted [https://lists.busybox.net/pipermail/busybox/2025-November/091840.html]

(From OE-Core rev: 077f258eb2125359ffe3982c58433ee14cb21f09)

Signed-off-by: Livin Sunny <livinsunny519@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit f12af98df8f627c6d1836d27be48bac542a4f00e)
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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

@@ -0,0 +1,42 @@
+From: Radoslav Kolev <radoslav.kolev@suse.com>
+Date: Fri, 21 Nov 2025 11:21:18 +0200
+Subject: wget: don't allow control characters or spaces in the URL
+Bug-Debian: https://bugs.debian.org/1120795
+
+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>
+
+Upstream-Status: Submitted [https://lists.busybox.net/pipermail/busybox/2025-November/091840.html]
+
+CVE: CVE-2025-60876
+
+Signed-off-by: Livin Sunny <livinsunny519@gmail.com>
+---
+ networking/wget.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/networking/wget.c b/networking/wget.c
+index ec3767793..fa555427b 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);
+
+--
+2.47.3

meta/recipes-core/busybox/busybox_1.36.1.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 "
 # TODO http://lists.busybox.net/pipermail/busybox/2023-January/090078.html