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VULNERABILITIES

CVE-2025-21909 Details

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

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6 kernel.orgPatch
https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7 kernel.orgPatch
https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f kernel.orgPatch
https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486 kernel.orgPatch
https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a kernel.orgPatch

see all 10 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 2.6.26, < 5.4.291
>= 5.5, < 5.10.235
>= 5.11, < 5.15.179
>= 5.16, < 6.1.131
>= 6.2, < 6.6.83

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-21909
NVD Published Date:
Apr 1, 2025
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2025-21909 Details - Not Deferred