[OE-core] [scarthgap] [PATCH 2/7] curl: fix CVE-2026-5545

["Anil Dongare -X (adongare - E INFOCHIPS PRIVATE LIMITED at Cisco)" <adongare@cisco.com>]

From: Anil Dongare <adongare@cisco.com>

Backport the upstream fix [1] for the Negotiate-authenticated connection
reuse issue described in [2] and tracked by [3].

[1] https://github.com/curl/curl/commit/33e43985b8f3b9e66691d06e70be0395849856cd
[2] https://curl.se/docs/CVE-2026-5545.html
[3] https://nvd.nist.gov/vuln/detail/CVE-2026-5545

Signed-off-by: Anil Dongare <adongare@cisco.com>
---
 .../curl/curl/CVE-2026-5545.patch             | 44 +++++++++++++++++++
 meta/recipes-support/curl/curl_8.7.1.bb       |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 meta/recipes-support/curl/curl/CVE-2026-5545.patch

diff --git a/meta/recipes-support/curl/curl/CVE-2026-5545.patch b/meta/recipes-support/curl/curl/CVE-2026-5545.patch
new file mode 100644
index 0000000000..34400176f0
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2026-5545.patch
@@ -0,0 +1,44 @@
+From b98d817a2c168834747ba4721b8d66cd1e683578 Mon Sep 17 00:00:00 2001
+From: Stefan Eissing <stefan@eissing.org>
+Date: Fri, 5 Jun 2026 01:17:44 -0700
+Subject: [PATCH] url: improve connection reuse on negotiate
+
+Check state of negotiate to allow proper connection reuse.
+
+Closes #21203
+
+CVE: CVE-2026-5545
+Upstream-Status: Backport [https://github.com/curl/curl/commit/33e43985b8f3b9e66691d06e70be0395849856cd]
+
+Backport Changes:
+- curl-8.7.1 still performs the NTLM/Negotiate reuse logic inline in
+  ConnectionExists(), so the upstream guard was adapted there.
+
+(cherry picked from commit 33e43985b8f3b9e66691d06e70be0395849856cd)
+Signed-off-by: Anil Dongare <adongare@cisco.com>
+---
+ lib/url.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/lib/url.c b/lib/url.c
+index 759a994..34a3470 100644
+--- a/lib/url.c
++++ b/lib/url.c
+@@ -1226,8 +1226,14 @@ ConnectionExists(struct Curl_easy *data,
+          Curl_timestrcmp(needle->passwd, check->passwd)) {
+
+         /* we prefer a credential match, but this is at least a connection
+-           that can be reused and "upgraded" to NTLM */
++           that can be reused and "upgraded" to NTLM if it does
++           not have any auth ongoing. */
++#ifdef USE_SPNEGO
++        if((check->http_ntlm_state == NTLMSTATE_NONE) &&
++           (check->http_negotiate_state == GSS_AUTHNONE))
++#else
+         if(check->http_ntlm_state == NTLMSTATE_NONE)
++#endif
+           chosen = check;
+         continue;
+       }
+--
+2.43.7
diff --git a/meta/recipes-support/curl/curl_8.7.1.bb b/meta/recipes-support/curl/curl_8.7.1.bb
index ad7ceceb69..5d0133f605 100644
--- a/meta/recipes-support/curl/curl_8.7.1.bb
+++ b/meta/recipes-support/curl/curl_8.7.1.bb
@@ -36,6 +36,7 @@ SRC_URI = " \
     file://CVE-2026-1965-2.patch \
     file://CVE-2026-3783.patch \
     file://CVE-2026-3784.patch \
+    file://CVE-2026-5545.patch \
 "
 
 SRC_URI:append:class-nativesdk = " \
-- 
2.51.0