CVE-2025-21909

MEDIUM EPSS 3.8%
Published Apr 1, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 1, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥2.6.26  –  <5.4.291
linuxlinux_kernel*≥5.5  –  <5.10.235
linuxlinux_kernel*≥5.11  –  <5.15.179
linuxlinux_kernel*≥5.16  –  <6.1.131
linuxlinux_kernel*≥6.2  –  <6.6.83
linuxlinux_kernel*≥6.7  –  <6.12.19
linuxlinux_kernel*≥6.13  –  <6.13.7
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 10

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

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7
    Patch