udisks2: Hardening measure of CVE-2025-6019walnascar-nextwalnascar

Refer [1], CVE-2025-6019 is strongly related to udisk daemon, and
this is a hardening measure related to this.

[1] https://cdn2.qualys.com/2025/06/17/suse15-pam-udisks-lpe.txt
[2] https://security-tracker.debian.org/tracker/CVE-2025-6019
[3] https://ubuntu.com/blog/udisks-libblockdev-lpe-vulnerability-fixes-available

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

2 files changed, 52 insertions, 0 deletions

diff --git a/meta-oe/recipes-support/udisks/udisks2/CVE-2025-6019.patch b/meta-oe/recipes-support/udisks/udisks2/CVE-2025-6019.patch
new file mode 100644
index 0000000000..2e94c8497f
--- /dev/null
+++ b/meta-oe/recipes-support/udisks/udisks2/CVE-2025-6019.patch
@@ -0,0 +1,51 @@
+From d0d04a381036b79df91616552706d515639bb762 Mon Sep 17 00:00:00 2001
+From: Tomas Bzatek <tbzatek@redhat.com>
+Date: Wed, 4 Jun 2025 15:26:46 +0200
+Subject: [PATCH] udiskslinuxfilesystemhelpers: Mount private mounts with
+ 'nodev,nosuid'
+
+The private mount done in take_filesystem_ownership() should always
+default to 'nodev,nosuid' for security and 'errors=remount-ro' for
+selected filesystem types to handle an corrupted filesystem. This is
+consistent with mount options calculation for regular mounts.
+
+CVE: CVE-2025-6019
+Upstream-Status: Backport [ https://github.com/storaged-project/udisks/commit/5e7277debea926370e587408517560afe87d28c9 ]
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ src/udiskslinuxfilesystemhelpers.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/src/udiskslinuxfilesystemhelpers.c b/src/udiskslinuxfilesystemhelpers.c
+index 7c5fc037..9eb7742c 100644
+--- a/src/udiskslinuxfilesystemhelpers.c
++++ b/src/udiskslinuxfilesystemhelpers.c
+@@ -123,6 +123,7 @@ take_filesystem_ownership (const gchar  *device,
+ 
+ {
+   gchar *mountpoint = NULL;
++  const gchar *mount_opts;
+   GError *local_error = NULL;
+   gboolean unmount = FALSE;
+   gboolean success = TRUE;
+@@ -151,8 +152,15 @@ take_filesystem_ownership (const gchar  *device,
+               goto out;
+             }
+ 
++          mount_opts = "nodev,nosuid";
++          if (g_strcmp0 (fstype, "ext2") == 0 ||
++              g_strcmp0 (fstype, "ext3") == 0 ||
++              g_strcmp0 (fstype, "ext4") == 0 ||
++              g_strcmp0 (fstype, "jfs") == 0)
++            mount_opts = "nodev,nosuid,errors=remount-ro";
++
+           /* TODO: mount to a private mount namespace */
+-          if (!bd_fs_mount (device, mountpoint, fstype, NULL, NULL, &local_error))
++          if (!bd_fs_mount (device, mountpoint, fstype, mount_opts, NULL, &local_error))
+             {
+               g_set_error (error, UDISKS_ERROR, UDISKS_ERROR_FAILED,
+                            "Cannot mount %s at %s: %s",
+-- 
+2.34.1
+
diff --git a/meta-oe/recipes-support/udisks/udisks2_2.10.1.bb b/meta-oe/recipes-support/udisks/udisks2_2.10.1.bb
index cb1cbe670d..206de3c0ee 100644
--- a/meta-oe/recipes-support/udisks/udisks2_2.10.1.bb
+++ b/meta-oe/recipes-support/udisks/udisks2_2.10.1.bb
@@ -20,6 +20,7 @@ RDEPENDS:${PN} = "acl"
 SRC_URI = " \
         git://github.com/storaged-project/udisks.git;branch=2.10.x-branch;protocol=https \
         file://0001-Makefile.am-Dont-include-buildpath.patch \
+    file://CVE-2025-6019.patch \
 "
 SRCREV = "18c9faf089e306ad6f3f51f5cb887a6b9aa08350"
 S = "${WORKDIR}/git"