CVE-2025-21979

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

01/04/2025

Last modified:

06/04/2026

Description

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&#39;ll use invalid memory. Fix this by canceling the work before freeing the wiphy.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.1.57 (including)	6.1.132 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.5 (including)	6.6.84 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.20 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.8 (excluding)
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::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-21979

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools