Input validation error in Linux kernel - CVE-2025-21659
Published: January 21, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU103142
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21659
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the netdev_nl_napi_fill_one() and netdev_nl_napi_get_doit() functions in net/core/netdev-genl.c, within the dev_fill_forward_path() and napi_complete_done() functions in net/core/dev.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-21659
Install update from vendor's website.