#VU102103 NULL pointer dereference in Linux kernel - CVE-2024-56702
Published: December 30, 2024 / Updated: May 11, 2025
Vulnerability identifier: #VU102103
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-2024-56702
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 SEC() function in tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c, within the reg_btf_record(), check_ptr_to_btf_access(), check_mem_access(), check_func_arg(), btf_check_func_arg_match(), check_kfunc_args(), sanitize_check_bounds(), adjust_ptr_min_max_vals() and convert_ctx_accesses() functions in kernel/bpf/verifier.c, within the btf_ctx_access() function in kernel/bpf/btf.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/3634d4a310820567fc634bf8f1ee2b91378773e8
- https://git.kernel.org/stable/c/c9b91d2d54175f781ad2c361cb2ac2c0e29b14b6
- https://git.kernel.org/stable/c/cb4158ce8ec8a5bb528cc1693356a5eb8058094d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13