#VU106640 Use-after-free in Linux kernel - CVE-2025-21979
Published: April 2, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106640
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21979
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cfg80211_dev_free() function in net/wireless/core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2
- https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90
- https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138
- https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e
- https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.8