SB20241230127 - NULL pointer dereference in Linux kernel

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Main Vulnerability Database SB20241230127

SB20241230127 - NULL pointer dereference in Linux kernel

Published: December 30, 2024 Updated: May 11, 2025

Security Bulletin ID SB20241230127
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2024-56702)

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.

References