#VU98956 NULL pointer dereference in Linux kernel - CVE-2024-49940
Published: October 22, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU98956
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-2024-49940
CWE-ID: CWE-476
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 NULL pointer dereference within the pppol2tp_session_setsockopt() function in net/l2tp/l2tp_ppp.c, within the l2tp_nl_cmd_session_modify() function in net/l2tp/l2tp_netlink.c, within the l2tp_v3_session_get(), l2tp_session_register(), l2tp_recv_common(), EXPORT_SYMBOL_GPL(), l2tp_session_set_header_len() and l2tp_session_create() functions in net/l2tp/l2tp_core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.