CVE-2025-21979

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21979
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel wiphy_work before freeing wiphy A wiphy_work can be queued from the moment the wiphy is allocated and initialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the rdev::wiphy_work is getting queued. If wiphy_free is called before the rdev::wiphy_work had a chance to run, the wiphy memory will be freed, and then when it eventally gets to run it'll use invalid memory. Fix this by canceling the work before freeing the wiphy.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2 Patch
https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90 Patch
https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138 Patch
https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e Patch
https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
History

10 Apr 2025, 13:25

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2 - () https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2 - Patch
References () https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90 - () https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90 - Patch
References () https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138 - () https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138 - Patch
References () https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e - () https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e - Patch
References () https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd - () https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
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:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: cfg80211: cancelar wiphy_work antes de liberar wiphy. Un wiphy_work puede ponerse en cola desde el momento en que se asigna e inicializa el wiphy (es decir, wiphy_new_nm). Cuando se pone en cola un wiphy_work, también se pone en cola rdev::wiphy_work. Si se llama a wiphy_free antes de que rdev::wiphy_work se ejecute, se liberará la memoria del wiphy y, cuando finalmente se ejecute, usará memoria no válida. Para solucionar esto, cancele el trabajo antes de liberar el wiphy.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416
First Time Linux linux Kernel
Linux

01 Apr 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-01 16:15

Updated : 2025-04-10 13:25

NVD link : CVE-2025-21979

Mitre link : CVE-2025-21979

CVE.ORG link : CVE-2025-21979

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free