How to fix CVE-2024-56764?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. If patching is delayed, consider network segmentation to limit exposure.

Is Memory Corruption affected by CVE-2024-56764?

CVE-2024-56764 presents notable security risk, a use-after-free vulnerability rated CVSS 7.8. Exploitation could compromise the security of affected deployments. A patch is available and should be applied as part of regular vulnerability management.

CVE-2024-56764

HIGH

2025-01-06 416baaa9-dc9f-4396-8d5f-8c081fb06d67

7.8

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:02 vuln.today

Patch Released

Mar 28, 2026 - 18:02 nvd

Patch available

CVE Published

Jan 06, 2025 - 17:15 nvd

HIGH 7.8

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails.

Analysis

In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Technical Context

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails. Affected products include: Linux Linux Kernel.

Affected Products

Linux Linux Kernel.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +39

POC: 0

Vendor Status

CVE-2024-56764 vulnerability details – vuln.today

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CVE-2024-56764

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CVE-2024-56764

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

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Remediation

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External POC / Exploit Code