#VU104938 Memory leak in Linux kernel - CVE-2025-21757
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104938
Vulnerability risk: Low
CVSSv4.0: 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-2025-21757
CWE-ID: CWE-401
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the seg6_input_core() and seg6_output_core() functions in net/ipv6/seg6_iptunnel.c, within the rpl_output() and rpl_input() functions in net/ipv6/rpl_iptunnel.c, within the ioam6_do_encap(), ip6_route_output() and dst_output() functions in net/ipv6/ioam6_iptunnel.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.