fix use-after-free reported by OSH

Resolves: RHEL-129729

0001-scheduler-Fix-possible-use_after_free-in-cupsdReadCl.patch

@@ -0,0 +1,29 @@
+From c1d2c631267f28131dd31df5b895b8bfb3005b0d Mon Sep 17 00:00:00 2001
+From: Zdenek Dohnal <zdohnal@redhat.com>
+Date: Thu, 11 Dec 2025 15:12:55 +0100
+Subject: [PATCH] scheduler: Fix possible use_after_free in `cupsdReadClient()`
+
+If `cupsdSendHeader()` fails, we free the connection and return -1, but
+in that case we try to free the connection again in `cupsdReadClient()`.
+---
+ scheduler/client.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/scheduler/client.c b/scheduler/client.c
+index f6166091e..63844d531 100644
+--- a/scheduler/client.c
++++ b/scheduler/client.c
+@@ -2761,10 +2761,7 @@ check_start_tls(cupsd_client_t *con)	/* I - Client connection */
+     httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
+ 
+     if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
+-    {
+-      cupsdCloseClient(con);
+       return (-1);
+-    }
+   }
+ 
+   return (1);
+-- 
+2.52.0
+

cups.spec

@@ -22,7 +22,7 @@ Summary: CUPS printing system
 Name: cups
 Epoch: 1
 Version: 2.2.6
-Release: 65%{?dist}
+Release: 66%{?dist}
 License: GPLv2+ and LGPLv2 with exceptions and AML
 Url: http://www.cups.org/
 Source0: https://github.com/apple/cups/releases/download/v%{VERSION}/cups-%{VERSION}-source.tar.gz
@@ -209,6 +209,9 @@ Patch102: 0001-Fix-an-infinite-loop-issue-in-GTK-Issue-1439.patch
 # 0001-conf.c-Fix-stopping-scheduler-on-unknown-directive.patch
 Patch103: 0001-Fix-various-issues-in-cupsd.patch
 Patch104: 0001-conf.c-Fix-stopping-scheduler-on-unknown-directive.patch
+# fix use-after-free reported by OSH
+# https://github.com/OpenPrinting/cups/pull/1454
+Patch105: 0001-scheduler-Fix-possible-use_after_free-in-cupsdReadCl.patch
 
 Patch1000: cups-lspp.patch
 
@@ -549,6 +552,8 @@ Sends IPP requests to the specified URI and tests and/or displays the results.
 # RHEL-129720 CVE-2025-61915 cups: Local denial-of-service via cupsd.conf update and related issues
 %patch103 -p1 -b .config-issues
 %patch104 -p1 -b .ignore-unknown
+# fix use-after-free reported by OSH
+%patch105 -p1 -b .osh-use-after-free
 
 
 sed -i -e '1iMaxLogSize 0' conf/cupsd.conf.in
@@ -976,6 +981,9 @@ rm -f %{cups_serverbin}/backend/smb
 %{_mandir}/man5/ipptoolfile.5.gz
 
 %changelog
+* Fri Dec 12 2025 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.2.6-66
+- fix use-after-free reported by OSH
+
 * Tue Dec 09 2025 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.2.6-65
 - RHEL-129729 CVE-2025-58436 cups: Slow client communication leads to a possible DoS attack
 - RHEL-129720 CVE-2025-61915 cups: Local denial-of-service via cupsd.conf update and related issues