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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-21811 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/367a9bffabe08c04f6d725032cce3d891b2b9e1a kernel.org Patch 
https://git.kernel.org/stable/c/4b08d23d7d1917bef4fbee8ad81372f49b006656 kernel.org Patch 
https://git.kernel.org/stable/c/58c27fa7a610b6e8d44e6220e7dbddfbaccaf439 kernel.org Patch 
https://git.kernel.org/stable/c/72cf688d0ce7e642b12ddc9b2a42524737ec1b4a kernel.org Patch 
https://git.kernel.org/stable/c/8e1b9201c9a24638cf09c6e1c9f224157328010b kernel.org Patch 
https://git.kernel.org/stable/c/c437dfac9f7a5a46ac2a5e6d6acd3059e9f68188 kernel.org Patch 
https://git.kernel.org/stable/c/d8ff250e085a4c4cdda4ad1cdd234ed110393143 kernel.org Patch 
https://git.kernel.org/stable/c/e1fc4a90a90ea8514246c45435662531975937d9 kernel.org Patch 
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html CVE
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html CVE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-21811
NVD Published Date:
02/27/2025
NVD Last Modified:
11/03/2025
Source:
kernel.org