cups: fix CVE-2026-39316

Pick the upstream patch [1] as mentioned in [2].

[1] https://github.com/OpenPrinting/cups/commit/0142eeb58e0d718b7d2e1f0d5dd214bd2192cc7f
[2] https://security-tracker.debian.org/tracker/CVE-2026-39316

(From OE-Core rev: f7e5b2536577573a9a9a280c1dda9c21140cfb21)

Signed-off-by: Deepak Rathore <deeratho@cisco.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>

meta/recipes-extended/cups/cups.inc

@@ -31,6 +31,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/cups-${PV}-source.tar.gz \
            file://CVE-2026-34979.patch \
            file://CVE-2026-34990.patch \
            file://CVE-2026-39314.patch \
+           file://CVE-2026-39316.patch \
            "
 
 GITHUB_BASE_URI = "https://github.com/OpenPrinting/cups/releases"

meta/recipes-extended/cups/cups/CVE-2026-39316.patch

@@ -0,0 +1,40 @@
+From 7c4d7951d189e931563f21086196d5a55fb2fa15 Mon Sep 17 00:00:00 2001
+From: Michael R Sweet <msweet@msweet.org>
+Date: Sun, 5 Apr 2026 11:33:23 -0400
+Subject: [PATCH] Expire per-printer subscriptions before deleting.
+
+CVE: CVE-2026-39316
+Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/0142eeb58e0d718b7d2e1f0d5dd214bd2192cc7f]
+
+Backport Changes:
+- Rebase scheduler/printers.c delete-printer context to the CUPS 2.4.11
+  source carried by this recipe.
+- Omit the upstream CHANGES.md release-note hunk because Yocto patch metadata
+  carries the CVE details and the target source release-note sections differ.
+
+(cherry picked from commit 0142eeb58e0d718b7d2e1f0d5dd214bd2192cc7f)
+Signed-off-by: Deepak Rathore <deeratho@cisco.com>
+---
+ scheduler/printers.c |    6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/scheduler/printers.c b/scheduler/printers.c
+index bf493a3..ca983f9 100644
+--- a/scheduler/printers.c
++++ b/scheduler/printers.c
+@@ -641,6 +641,12 @@ cupsdDeletePrinter(
+                      update ? "Job stopped due to printer being deleted." :
+ 		              "Job stopped.");
+ 
++ /*
++  * Expire subscriptions on the printer...
++  */
++
++  cupsdExpireSubscriptions(p, /*job*/NULL);
++
+  /*
+   * Remove the printer from the list...
+   */
+-- 
+2.43.7
+