wget: Fix CVE-2026-58469

This patch applies the upstream fix as referenced in [2],
using the commit shown in [1].

It also includes the upstream follow-up fixes referenced in [3]
and [4]. These correct the trailing whitespace check introduced
by the original fix and add the required <ctype.h> include for
isspace().

[1] 37a40fcb45
[2] https://nvd.nist.gov/vuln/detail/CVE-2026-58469
[3] 7b1cdecc49
[4] 82d945ff5d

(From OE-Core rev: 9b76cb0b22f9a0ec2877ac69ab4007f2cd2178e5)

Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/wget/wget/CVE-2026-58469-regression_p1.patch

@@ -0,0 +1,39 @@
+From be4edfe6d30a9db8e51215f0232d31eb92d502ec Mon Sep 17 00:00:00 2001
+From: ChenYanpan <chenyanpan@xfusion.com>
+Date: Wed, 8 Jul 2026 12:09:55 +0800
+Subject: [PATCH] * src/metalink.c (clean_metalink_string): Fix inverted
+ trailing-space check
+
+37a40fcb added an `end > beg' bound guard to prevent a buffer
+underflow, but accidentally flipped the condition from `isspace' to
+`!isspace'. The loop therefore walked back over non-space characters
+instead of trailing whitespace, collapsing any string without a
+trailing newline to "". Every Metalink/HTTP resource URL was wiped,
+so wget could not follow any mirror and
+testenv/Test-metalink-http.py failed ("Expected file test.meta not
+found"). Restore the `isspace' condition.
+
+Copyright-paperwork-exempt: Yes
+
+CVE: CVE-2026-58469
+Upstream-Status: Backport [https://gitlab.com/gnuwget/wget/-/commit/7b1cdecc49bc77bde220fc575c8a00386c3f3bcf]
+
+(cherry picked from commit 7b1cdecc49bc77bde220fc575c8a00386c3f3bcf)
+Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
+---
+ src/metalink.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/metalink.c b/src/metalink.c
+index 10d58cf7..9f969a60 100644
+--- a/src/metalink.c
++++ b/src/metalink.c
+@@ -1061,7 +1061,7 @@ clean_metalink_string (char **str)
+   /* If we are at the end of the string, search the first legit
+      character going backward.  */
+   if (*end == '\0')
+-    while (end > beg && !isspace(*(end - 1)))
++    while (end > beg && isspace(*(end - 1)))
+       end--;
+ 
+   new = xmemdup0 (beg, end - beg);

meta/recipes-extended/wget/wget/CVE-2026-58469-regression_p2.patch

@@ -0,0 +1,26 @@
+From aa412523158313619dd04d49b6f769d639e7dcc5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
+Date: Thu, 9 Jul 2026 14:50:40 +0200
+Subject: [PATCH] * src/metalink.c: Include ctype.h
+
+CVE: CVE-2026-58469
+Upstream-Status: Backport [https://gitlab.com/gnuwget/wget/-/commit/82d945ff5dc9942b78b2bf736aac298c24fe00a1]
+
+(cherry picked from commit 82d945ff5dc9942b78b2bf736aac298c24fe00a1)
+Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
+---
+ src/metalink.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/metalink.c b/src/metalink.c
+index 9f969a60..16933be4 100644
+--- a/src/metalink.c
++++ b/src/metalink.c
+@@ -46,6 +46,7 @@ as that of the covered work.  */
+ #include "c-strcase.h"
+ #include <errno.h>
+ #include <unistd.h> /* For unlink.  */
++#include <ctype.h>
+ #include <metalink/metalink_parser.h>
+ #ifdef HAVE_GPGME
+ #include <gpgme.h>

meta/recipes-extended/wget/wget/CVE-2026-58469.patch

@@ -0,0 +1,53 @@
+From 2442499cc090e6aa804b0295fe9f881b78df2940 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
+Date: Mon, 29 Jun 2026 18:32:02 +0200
+Subject: [PATCH] * src/metalink.c (clean_metalink_string): Fix buffer
+ underflow
+
+Reported-by: TristanInSec@gmail.com
+
+CVE: CVE-2026-58469
+Upstream-Status: Backport [https://gitlab.com/gnuwget/wget/-/commit/37a40fcb450153f69537c7cbc2a7a4fb0b6f7826]
+
+(cherry picked from commit 37a40fcb450153f69537c7cbc2a7a4fb0b6f7826)
+Signed-off-by: Hetvi Thakar <hthakar@cisco.com>
+---
+ src/metalink.c | 9 +++------
+ 1 file changed, 3 insertions(+), 6 deletions(-)
+
+diff --git a/src/metalink.c b/src/metalink.c
+index eca839c2..10d58cf7 100644
+--- a/src/metalink.c
++++ b/src/metalink.c
+@@ -1041,7 +1041,6 @@ void
+ clean_metalink_string (char **str)
+ {
+   int c;
+-  size_t len;
+   char *new, *beg, *end;
+ 
+   if (!str || !*str)
+@@ -1049,7 +1048,7 @@ clean_metalink_string (char **str)
+ 
+   beg = *str;
+ 
+-  while ((c = *beg) && (c == '\n' || c == '\r' || c == '\t' || c == ' '))
++  while (isspace(*beg))
+     beg++;
+ 
+   end = beg;
+@@ -1062,12 +1061,10 @@ clean_metalink_string (char **str)
+   /* If we are at the end of the string, search the first legit
+      character going backward.  */
+   if (*end == '\0')
+-    while ((c = *(end - 1)) && (c == '\n' || c == '\r' || c == '\t' || c == ' '))
++    while (end > beg && !isspace(*(end - 1)))
+       end--;
+ 
+-  len = end - beg;
+-
+-  new = xmemdup0 (beg, len);
++  new = xmemdup0 (beg, end - beg);
+   xfree (*str);
+   *str = new;
+ }

meta/recipes-extended/wget/wget_1.21.4.bb

@@ -2,6 +2,9 @@ SRC_URI = "${GNU_MIRROR}/wget/wget-${PV}.tar.gz \
            file://0002-improve-reproducibility.patch \
            file://CVE-2024-38428.patch \
            file://CVE-2024-10524.patch \
+           file://CVE-2026-58469.patch \
+           file://CVE-2026-58469-regression_p1.patch \
+           file://CVE-2026-58469-regression_p2.patch \
           "
 
 SRC_URI[sha256sum] = "81542f5cefb8faacc39bbbc6c82ded80e3e4a88505ae72ea51df27525bcde04c"