part: Check whether partition exists before setting GPT attributes

Resolves: RHEL-143353

0002-part-Check-whether-partition-exists-before-setting-GPT-attributes.patch

@@ -0,0 +1,46 @@
+From 168e3cea4c9d9ef3b858b5862b323900e0344c46 Mon Sep 17 00:00:00 2001
+From: Vojtech Trefny <vtrefny@redhat.com>
+Date: Thu, 19 Feb 2026 16:23:20 +0100
+Subject: [PATCH] part: Check whether partition exists before setting GPT
+ attributes
+
+Other "set" functions already have this check.
+
+Resolves: RHEL-143353
+---
+ src/plugins/part.c | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/src/plugins/part.c b/src/plugins/part.c
+index 35ac5c09f..26e580638 100644
+--- a/src/plugins/part.c
++++ b/src/plugins/part.c
+@@ -2208,6 +2208,7 @@ gboolean bd_part_set_part_bootable (const gchar *disk, const gchar *part, gboole
+  */
+ gboolean bd_part_set_part_attributes (const gchar *disk, const gchar *part, guint64 attrs, GError **error) {
+     struct fdisk_context *cxt = NULL;
++    struct fdisk_partition *pa = NULL;
+     gint part_num = 0;
+     gint ret = 0;
+ 
+@@ -2222,10 +2223,20 @@ gboolean bd_part_set_part_attributes (const gchar *disk, const gchar *part, guin
+     if (!cxt)
+         return FALSE;
+ 
++    ret = fdisk_get_partition (cxt, part_num, &pa);
++    if (ret != 0) {
++        g_set_error (error, BD_PART_ERROR, BD_PART_ERROR_FAIL,
++                     "Failed to get partition '%d' on device '%s'.", part_num, disk);
++        close_context (cxt);
++        return FALSE;
++    }
++    fdisk_unref_partition (pa);
++
+     ret = fdisk_gpt_set_partition_attrs (cxt, part_num, attrs);
+     if (ret < 0) {
+         g_set_error (error, BD_PART_ERROR, BD_PART_ERROR_FAIL,
+                      "Failed to set GPT attributes: %s", strerror_l (-ret, c_locale));
++        close_context (cxt);
+         return FALSE;
+     }
+ 

libblockdev.spec

@@ -86,13 +86,14 @@
 
 Name:        libblockdev
 Version:     3.4.0
-Release:     2%{?dist}
+Release:     3%{?dist}
 Summary:     A library for low-level manipulation with block devices
 License:     LGPL-2.1-or-later
 URL:         https://github.com/storaged-project/libblockdev
 Source0:     https://github.com/storaged-project/libblockdev/releases/download/%{version}/%{name}-%{version}.tar.gz
 
 Patch0:      0001-lvm-dbus-Show-better-error-for-invalid-LVM-IDs.patch
+Patch1:      0002-part-Check-whether-partition-exists-before-setting-GPT-attributes.patch
 
 BuildRequires: make
 BuildRequires: glib2-devel
@@ -948,6 +949,10 @@ find %{buildroot} -type f -name "*.la" | xargs %{__rm}
 %files plugins-all
 
 %changelog
+* Mon Mar 23 2026 Vojtech Trefny <vtrefny@redhat.com> - 3.4.0-3
+- part: Check whether partition exists before setting GPT attributes
+  Resolves: RHEL-143353
+
 * Thu Oct 30 2025 Vojtech Trefny <vtrefny@redhat.com> - 3.4.0-2
 - lvm-dbus: Show better error for invalid LVM IDs
   Resolves: RHEL-123039