#VU105134 Use-after-free in Linux kernel - CVE-2025-21812 

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Main Vulnerability Database Vulnerabilities #VU105134

#VU105134 Use-after-free in Linux kernel - CVE-2025-21812

Published: February 28, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU105134
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-2025-21812
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
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 ax25_rt_autobind() function in net/ax25/ax25_route.c, within the ax25_send_frame() and ax25_queue_xmit() functions in net/ax25/ax25_out.c, within the ax25_ip_xmit() function in net/ax25/ax25_ip.c, within the ax25_dev_device_up() and ax25_dev_device_down() functions in net/ax25/ax25_dev.c, within the ax25_fillin_cb_from_dev() and ax25_setsockopt() functions in net/ax25/af_ax25.c. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

External links