[OE-core][kirkstone][PATCH v2 4/4] curl: patch CVE-2026-3784

[vanusuri@mvista.com]

From: Vijay Anusuri <vanusuri@mvista.com>

pick patch from ubuntu per [1]

[1] https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/curl/7.81.0-1ubuntu1.23/curl_7.81.0-1ubuntu1.23.debian.tar.xz
[2] https://ubuntu.com/security/CVE-2026-3784
[3] https://curl.se/docs/CVE-2026-3784.html

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
---
 .../curl/curl/CVE-2026-3784.patch             | 73 +++++++++++++++++++
 meta/recipes-support/curl/curl_7.82.0.bb      |  1 +
 2 files changed, 74 insertions(+)
 create mode 100644 meta/recipes-support/curl/curl/CVE-2026-3784.patch

diff --git a/meta/recipes-support/curl/curl/CVE-2026-3784.patch b/meta/recipes-support/curl/curl/CVE-2026-3784.patch
new file mode 100644
index 0000000000..95784e4763
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2026-3784.patch
@@ -0,0 +1,73 @@
+From 5f13a7645e565c5c1a06f3ef86e97afb856fb364 Mon Sep 17 00:00:00 2001
+From: Stefan Eissing <stefan@eissing.org>
+Date: Fri, 6 Mar 2026 14:54:09 +0100
+Subject: [PATCH] proxy-auth: additional tests
+
+Also eliminate the special handling for socks proxy match.
+
+Closes #20837
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/5f13a7645e565c5c1a06f3]
+Backported by Ubuntu team https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/curl/7.81.0-1ubuntu1.23/curl_7.81.0-1ubuntu1.23.debian.tar.xz
+
+CVE: CVE-2026-3784
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ lib/url.c                        | 28 +++++++---------------------
+ tests/http/test_13_proxy_auth.py | 20 ++++++++++++++++++++
+ tests/http/testenv/curl.py       | 18 +++++++++++++++---
+ 3 files changed, 42 insertions(+), 24 deletions(-)
+
+--- a/lib/url.c
++++ b/lib/url.c
+@@ -930,33 +930,15 @@ proxy_info_matches(const struct proxy_in
+ {
+   if((data->proxytype == needle->proxytype) &&
+      (data->port == needle->port) &&
+-     Curl_safe_strcasecompare(data->host.name, needle->host.name))
+-    return TRUE;
++     curl_strequal(data->host.name, needle->host.name)) {
+ 
++    if(Curl_timestrcmp(data->user, needle->user) ||
++       Curl_timestrcmp(data->passwd, needle->passwd))
++      return FALSE;
++    return TRUE;
++  }
+   return FALSE;
+ }
+-
+-static bool
+-socks_proxy_info_matches(const struct proxy_info *data,
+-                         const struct proxy_info *needle)
+-{
+-  if(!proxy_info_matches(data, needle))
+-    return FALSE;
+-
+-  /* the user information is case-sensitive
+-     or at least it is not defined as case-insensitive
+-     see https://datatracker.ietf.org/doc/html/rfc3986#section-3.2.1 */
+-
+-  /* curl_strequal does a case insentive comparison, so do not use it here! */
+-  if(Curl_timestrcmp(data->user, needle->user) ||
+-     Curl_timestrcmp(data->passwd, needle->passwd))
+-    return FALSE;
+-  return TRUE;
+-}
+-#else
+-/* disabled, won't get called */
+-#define proxy_info_matches(x,y) FALSE
+-#define socks_proxy_info_matches(x,y) FALSE
+ #endif
+ 
+ /* A connection has to have been idle for a shorter time than 'maxage_conn'
+@@ -1282,8 +1264,8 @@ ConnectionExists(struct Curl_easy *data,
+         continue;
+ 
+       if(needle->bits.socksproxy &&
+-        !socks_proxy_info_matches(&needle->socks_proxy,
+-                                  &check->socks_proxy))
++        !proxy_info_matches(&needle->socks_proxy,
++                            &check->socks_proxy))
+         continue;
+ #endif
+       if(needle->bits.conn_to_host != check->bits.conn_to_host)
diff --git a/meta/recipes-support/curl/curl_7.82.0.bb b/meta/recipes-support/curl/curl_7.82.0.bb
index f50af1d472..a2ee573681 100644
--- a/meta/recipes-support/curl/curl_7.82.0.bb
+++ b/meta/recipes-support/curl/curl_7.82.0.bb
@@ -75,6 +75,7 @@ SRC_URI = "https://curl.se/download/${BP}.tar.xz \
            file://CVE-2026-1965-2.patch \
            file://CVE-2026-3783-pre1.patch \
            file://CVE-2026-3783.patch \
+           file://CVE-2026-3784.patch \
            "
 SRC_URI[sha256sum] = "0aaa12d7bd04b0966254f2703ce80dd5c38dbbd76af0297d3d690cdce58a583c"
 
-- 
2.25.1