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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-21909 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject cooked mode if it is set along with other flags It is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE flags simultaneously on the same monitor interface from the userspace. This causes a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit set because the monitor interface is in the cooked state and it takes precedence over all other states. When the interface is then being deleted the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing that bit. Fix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with other flags. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.


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/236f41ca728f23210b31ed2d1d8a6df575a4b2d6 kernel.org Patch 
https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7 kernel.org Patch 
https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f kernel.org Patch 
https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486 kernel.org Patch 
https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a kernel.org Patch 
https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65 kernel.org Patch 
https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461 kernel.org Patch 
https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7 kernel.org Patch 
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html CVE
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html CVE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-21909
NVD Published Date:
04/01/2025
NVD Last Modified:
11/03/2025
Source:
kernel.org