[OE-core] [wrynose] [PATCH 2/2] cups: fix CVE-2026-41079

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

From: Anil Dongare <adongare@cisco.com>

Pick the upstream fix [1] for CVE-2026-41079 as referenced by Debian [2].

[1] https://github.com/OpenPrinting/cups/commit/b7c2525a885f528d243c3a92197ca99609b3f080
[2] https://security-tracker.debian.org/tracker/CVE-2026-41079

Signed-off-by: Anil Dongare <adongare@cisco.com>
---
 meta/recipes-extended/cups/cups.inc           |  1 +
 .../cups/cups/CVE-2026-41079.patch            | 73 +++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100644 meta/recipes-extended/cups/cups/CVE-2026-41079.patch

diff --git a/meta/recipes-extended/cups/cups.inc b/meta/recipes-extended/cups/cups.inc
index 49b828506a..9f5d5fe726 100644
--- a/meta/recipes-extended/cups/cups.inc
+++ b/meta/recipes-extended/cups/cups.inc
@@ -24,6 +24,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/cups-${PV}-source.tar.gz \
            file://CVE-2026-27447.patch \
            file://CVE-2026-27447-regression_p1.patch \
            file://CVE-2026-27447-regression_p2.patch \
+           file://CVE-2026-41079.patch \
            "
 
 GITHUB_BASE_URI = "https://github.com/OpenPrinting/cups/releases"
diff --git a/meta/recipes-extended/cups/cups/CVE-2026-41079.patch b/meta/recipes-extended/cups/cups/CVE-2026-41079.patch
new file mode 100644
index 0000000000..2392a77311
--- /dev/null
+++ b/meta/recipes-extended/cups/cups/CVE-2026-41079.patch
@@ -0,0 +1,73 @@
+From a331e93e2f9baf411715ef69ae19b73827da23d7 Mon Sep 17 00:00:00 2001
+From: Michael R Sweet <msweet@msweet.org>
+Date: Mon, 13 Apr 2026 11:50:23 -0400
+Subject: [PATCH] Limit num_bytes for SNMP string values.
+
+CVE: CVE-2026-41079
+
+Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/b7c2525a885f528d243c3a92197ca99609b3f080]
+
+(cherry picked from commit b7c2525a885f528d243c3a92197ca99609b3f080)
+Signed-off-by: Anil Dongare <adongare@cisco.com>
+---
+ cups/snmp-private.h | 6 +++---
+ cups/snmp.c         | 8 ++++++--
+ 2 files changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/cups/snmp-private.h b/cups/snmp-private.h
+index 52b8740..015f53e 100644
+--- a/cups/snmp-private.h
++++ b/cups/snmp-private.h
+@@ -1,7 +1,7 @@
+ /*
+  * Private SNMP definitions for CUPS.
+  *
+- * Copyright © 2020-2024 by OpenPrinting.
++ * Copyright © 2020-2026 by OpenPrinting.
+  * Copyright © 2007-2014 by Apple Inc.
+  * Copyright © 2006-2007 by Easy Software Products, all rights reserved.
+  *
+@@ -58,9 +58,9 @@ typedef enum cups_asn1_e cups_asn1_t;	/**** ASN1 request/object types ****/
+ 
+ typedef struct cups_snmp_string_s	/**** String value ****/
+ {
+-  unsigned char	bytes[CUPS_SNMP_MAX_STRING];
+-					/* Bytes in string */
+   unsigned	num_bytes;		/* Number of bytes */
++  unsigned char	bytes[CUPS_SNMP_MAX_STRING + 1];
++					/* Bytes in string */
+ } cups_snmp_string_t;
+ 
+ union cups_snmp_value_u			/**** Object value ****/
+diff --git a/cups/snmp.c b/cups/snmp.c
+index 54e348f..2fcb38d 100644
+--- a/cups/snmp.c
++++ b/cups/snmp.c
+@@ -1,7 +1,7 @@
+ /*
+  * SNMP functions for CUPS.
+  *
+- * Copyright © 2020-2024 by OpenPrinting.
++ * Copyright © 2020-2026 by OpenPrinting.
+  * Copyright © 2007-2019 by Apple Inc.
+  * Copyright © 2006-2007 by Easy Software Products, all rights reserved.
+  *
+@@ -1042,10 +1042,14 @@ asn1_decode_snmp(unsigned char *buffer,	/* I - Buffer */
+ 	        case CUPS_ASN1_OCTET_STRING :
+ 	        case CUPS_ASN1_BIT_STRING :
+ 	        case CUPS_ASN1_HEX_STRING :
+-		    packet->object_value.string.num_bytes = length;
+ 		    asn1_get_string(&bufptr, bufend, length,
+ 		                    (char *)packet->object_value.string.bytes,
+ 				    sizeof(packet->object_value.string.bytes));
++
++                    if (length >= sizeof(packet->object_value.string.bytes))
++		      packet->object_value.string.num_bytes = sizeof(packet->object_value.string.bytes) - 1;
++                    else
++		      packet->object_value.string.num_bytes = length;
+ 	            break;
+ 
+ 	        case CUPS_ASN1_OID :
+-- 
+2.43.7
+
-- 
2.44.4