curl: patch CVE-2026-1965

pick patches 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-2026-1965
[3] https://curl.se/docs/CVE-2026-1965.html

(From OE-Core rev: adb8a05ef19faf76c7c4a3ea68600aa443861a95)

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>

meta/recipes-support/curl/curl/CVE-2026-1965-1.patch

@@ -0,0 +1,98 @@
+From 34fa034d9a390c4bd65e2d05262755ec8646ac12 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Thu, 5 Feb 2026 08:34:21 +0100
+Subject: [PATCH] url: fix reuse of connections using HTTP Negotiate
+
+Assume Negotiate means connection-based
+
+Reported-by: Zhicheng Chen
+Closes #20534
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/34fa034d9a390c4bd6]
+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-2026-1965
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ lib/url.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++----
+ 1 file changed, 82 insertions(+), 5 deletions(-)
+
+--- a/lib/url.c
++++ b/lib/url.c
+@@ -1145,6 +1145,18 @@ ConnectionExists(struct Curl_easy *data,
+ #endif
+ #endif
+ 
++#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
++  bool wantNegohttp =
++    (data->state.authhost.want & CURLAUTH_NEGOTIATE) &&
++    (needle->handler->protocol & PROTO_FAMILY_HTTP);
++#ifndef CURL_DISABLE_PROXY
++  bool wantProxyNegohttp =
++    needle->bits.proxy_user_passwd &&
++    (data->state.authproxy.want & CURLAUTH_NEGOTIATE) &&
++    (needle->handler->protocol & PROTO_FAMILY_HTTP);
++#endif
++#endif
++
+   *force_reuse = FALSE;
+   *waitpipe = FALSE;
+ 
+@@ -1496,6 +1508,57 @@ ConnectionExists(struct Curl_easy *data,
+           continue;
+         }
+ #endif
++
++#ifdef USE_SPNEGO
++  /* If we are looking for an HTTP+Negotiate connection, check if this is
++     already authenticating with the right credentials. If not, keep looking
++     so that we can reuse Negotiate connections if possible. */
++  if(wantNegohttp) {
++    if(Curl_timestrcmp(needle->user, check->user) ||
++       Curl_timestrcmp(needle->passwd, check->passwd))
++      continue;
++  }
++  else if(check->http_negotiate_state != GSS_AUTHNONE) {
++    /* Connection is using Negotiate auth but we do not want Negotiate */
++    continue;
++  }
++
++#ifndef CURL_DISABLE_PROXY
++  /* Same for Proxy Negotiate authentication */
++  if(wantProxyNegohttp) {
++    /* Both check->http_proxy.user and check->http_proxy.passwd can be
++     * NULL */
++    if(!check->http_proxy.user || !check->http_proxy.passwd)
++      continue;
++
++    if(Curl_timestrcmp(needle->http_proxy.user,
++                       check->http_proxy.user) ||
++       Curl_timestrcmp(needle->http_proxy.passwd,
++                       check->http_proxy.passwd))
++      continue;
++  }
++  else if(check->proxy_negotiate_state != GSS_AUTHNONE) {
++    /* Proxy connection is using Negotiate auth but we do not want Negotiate */
++    continue;
++  }
++#endif
++  if(wantNTLMhttp || wantProxyNTLMhttp) {
++    /* Credentials are already checked, we may use this connection. We MUST
++     * use a connection where it has already been fully negotiated. If it has
++     * not, we keep on looking for a better one. */
++    chosen = check;
++    if((wantNegohttp &&
++        (check->http_negotiate_state != GSS_AUTHNONE)) ||
++       (wantProxyNegohttp &&
++        (check->proxy_negotiate_state != GSS_AUTHNONE))) {
++      /* We must use this connection, no other */
++      *force_reuse = TRUE;
++      break;
++    }
++    continue; /* get another */
++  }
++#endif
++
+         if(canmultiplex) {
+           /* We can multiplex if we want to. Let's continue looking for
+              the optimal connection to use. */

meta/recipes-support/curl/curl/CVE-2026-1965-2.patch

@@ -0,0 +1,29 @@
+From f1a39f221d57354990e3eeeddc3404aede2aff70 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Sat, 21 Feb 2026 18:11:41 +0100
+Subject: [PATCH] url: fix copy and paste url_match_auth_nego mistake
+
+Follow-up to 34fa034
+Reported-by: dahmono on github
+Closes #20662
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/f1a39f221d57354990]
+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-2026-1965
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ lib/url.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/lib/url.c
++++ b/lib/url.c
+@@ -1542,7 +1542,7 @@ ConnectionExists(struct Curl_easy *data,
+     continue;
+   }
+ #endif
+-  if(wantNTLMhttp || wantProxyNTLMhttp) {
++  if(wantNegohttp || wantProxyNegohttp) {
+     /* Credentials are already checked, we may use this connection. We MUST
+      * use a connection where it has already been fully negotiated. If it has
+      * not, we keep on looking for a better one. */

meta/recipes-support/curl/curl_7.82.0.bb

@@ -71,6 +71,8 @@ SRC_URI = "https://curl.se/download/${BP}.tar.xz \
            file://CVE-2025-15079.patch \
            file://CVE-2025-15224.patch \
            file://CVE-2025-14524.patch \
+           file://CVE-2026-1965-1.patch \
+           file://CVE-2026-1965-2.patch \
            "
 SRC_URI[sha256sum] = "0aaa12d7bd04b0966254f2703ce80dd5c38dbbd76af0297d3d690cdce58a583c"