CVE-2025-21811

March 4, 2025, 6:15 p.m.

7.8
High

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect access to buffers with no active references nilfs_lookup_dirty_data_buffers(), which iterates through the buffers attached to dirty data folios/pages, accesses the attached buffers without locking the folios/pages. For data cache, nilfs_clear_folio_dirty() may be called asynchronously when the file system degenerates to read only, so nilfs_lookup_dirty_data_buffers() still has the potential to cause use after free issues when buffers lose the protection of their dirty state midway due to this asynchronous clearing and are unintentionally freed by try_to_free_buffers(). Eliminate this race issue by adjusting the lock section in this function.

Product(s) Impacted

Product Versions
Linux Kernel
  • []

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-416
Use After Free
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

References

https://git.kernel.org/stable/c/367a9bffabe08c04f6d725032cce3d891b2b9e1a
https://git.kernel.org/stable/c/4b08d23d7d1917bef4fbee8ad81372f49b006656
https://git.kernel.org/stable/c/58c27fa7a610b6e8d44e6220e7dbddfbaccaf439
https://git.kernel.org/stable/c/8e1b9201c9a24638cf09c6e1c9f224157328010b
https://git.kernel.org/stable/c/c437dfac9f7a5a46ac2a5e6d6acd3059e9f68188

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
CWE-416
2025-02-27
CVE-2025-21811

CVSS Score

7.8 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Privileges Required: LOW
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

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

    View Vector String

Timeline

Published: Feb. 27, 2025, 8:16 p.m.
Last Modified: March 4, 2025, 6:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.