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Vulnerabilities

Vulnerability · CVE-2025-6019

GNU grub2 Execution with Unnecessary Privileges

Published Jun 19, 2025 · catalog updated Jun 30, 2026 · Red Hat Red Hat Enterprise Linux 9

Patch now

CVE-2025-6019 is in the CISA known-exploited catalog. Confirm Red Hat Red Hat Enterprise Linux 9 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.0
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.47%
Remediation
Remediation guidance
Affected products
vendor GNU grub2 · vendor Red Hat Red Hat Enterprise Linux 9 patch: 0:2.28-14.el9_6

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, the

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor GNU grub2version unspecified
  • vendor Red Hat Red Hat Enterprise Linux 9 patch: 0:2.28-14.el9_6patch: 0:2.28-14.el9_6

How to fix CVE-2025-6019

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-6019 is in the CISA known-exploited catalog. Confirm Red Hat Red Hat Enterprise Linux 9 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat Enterprise Linux 9 patch: 0:2.28-14.el9_6 patch: 0:2.28-14.el9_6. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.47%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 9, 2025 · VulnCheck KEV

    Detected

    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-pr

  2. Oct 9, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  3. Jun 30, 2026 · EUVD

    Updated

    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-pr

Sources

  • CVE.orgVulnerability recordCVE-2025-6019

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-6019

    30-day exploitation probability 0.5%

    first.org
  • EUVDVulnerability recordEUVD-2025-18685

    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_a

    euvd.enisa.europa.eu
  • VulnCheck KEVConfirmed exploitationCVE-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_a

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.