CVE-2025-21909
Vulnerability Scoring
Analysis In Progress
CVE-2025-21909 Vulnerability Analysis & Exploit Details
CVE-2025-21909
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2025-21909 Details
Status: Awaiting Analysis
Published on: 01 Apr 2025, 16:15 UTC
CVSS Release:
CVE-2025-21909 Vulnerability Summary
CVE-2025-21909: 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.
Assessing the Risk of CVE-2025-21909
Access Complexity Graph
The exploitability of CVE-2025-21909 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2025-21909
No exploitability data is available for CVE-2025-21909.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2025-21909, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2025-21909, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2025-21909 does not compromise confidentiality.
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Integrity:
None
CVE-2025-21909 does not impact data integrity.
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Availability:
None
CVE-2025-21909 does not affect system availability.
CVE-2025-21909 References
External References
- https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6
- https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7
- https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f
- https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486
- https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a
- https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65
- https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461
- https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7
CWE Common Weakness Enumeration
Unknown
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