CVE-2025-6019

libblockdev is a C library supporting GObject introspection for manipulation of block devices. It has a plugin-based architecture where each technology (like LVM, Btrfs, MD RAID, Swap,...) is implemented in a separate plugin, possibly with multiple implementations (e.g. using LVM CLI or the new LVM DBus API).

Security Fix(es):

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.(CVE-2025-6019)

Security Fix(es):

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.(CVE-2025-6019)

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The libblockdev packages provide a C library with GObject introspection support used for low-level operations on block devices. The library serves as a thin wrapper around plug-ins for specific functionality, such as LVM, Btrfs, LUKS, or MD RAID.

Security Fix(es):

• libblockdev: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

libblockdev is a C library supporting GObject introspection for manipulation of block devices. It has a plugin-based architecture where each technology (like LVM, Btrfs, MD RAID, Swap,...) is implemented in a separate plugin, possibly with multiple implementations (e.g. using LVM CLI or the new LVM DBus API).

Security Fix(es):

• libblockdev: Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

libblockdev is a C library supporting GObject introspection for manipulation of block devices. It has a plugin-based architecture where each technology (like LVM, Btrfs, MD RAID, Swap,...) is implemented in a separate plugin, possibly with multiple implementations (e.g. using LVM CLI or the new LVM DBus API).

Security Fix(es):

• libblockdev: Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

libblockdev is a C library supporting GObject introspection for manipulation of block devices. It has a plugin-based architecture where each technology (like LVM, Btrfs, MD RAID, Swap,...) is implemented in a separate plugin, possibly with multiple implementations (e.g. using LVM CLI or the new LVM DBus API).

Security Fix(es):

• libblockdev: Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. (CVE-2025-6019)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

• CVE-2025-6019: don't allow suid and dev set on fs resize

• CVE-2025-6019: fix local privilege escalation vulnerability by updating libblockdev to prevent mounting of user-provided filesystem images with SUID- root shell

• CVE-2025-6019: don't allow suid and dev set on fs resize

• SECURITY UPDATE: privilege escalation via suid/dev on resize mount
  • debian/patches/CVE-2025-6019.patch: mount with nosuid,nodev in xfs_resize_device() (src/plugins/fs/generic.c)
  • CVE-2025-6019

A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

These are all security issues fixed in the libbd_btrfs-devel-3.1.1-2.1 package on the GA media of openSUSE Tumbleweed.

This update for libblockdev fixes the following issues:

• CVE-2025-6019: Suppress privilege escalation during xfs fs resize (bsc#1243285).

This update for libblockdev fixes the following issues:

• CVE-2025-6019: Suppress privilege escalation during xfs fs resize (bsc#1243285).

This update for libblockdev fixes the following issues:

• CVE-2025-6019: Suppress privilege escalation during xfs fs resize ( (bsc#1243226)

This update for libblockdev fixes the following issues:

• CVE-2025-6019: Suppress privilege escalation during xfs fs resize ( (bsc#1243226)

It was discovered that libblockdev incorrectly handled mount options when resizing certain filesystems. A local attacker with an active session on the console can use this issue to escalate their privileges to root.

USN-7577-1 fixed a vulnerability in libblockdev. This update provides the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that libblockdev incorrectly handled mount options when resizing certain filesystems. A local attacker with an active session on the console can use this issue to escalate their privileges to root.

It was discovered that UDisks incorrectly handled mount options when resizing certain filesystems. A local attacker with an active session on the console can use this issue to escalate their privileges to root.

USN-7578-1 fixed a vulnerability in UDisks. This update provides the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that UDisks incorrectly handled mount options when resizing certain filesystems. A local attacker with an active session on the console can use this issue to escalate their privileges to root.