#VU91225 NULL pointer dereference in Linux kernel - CVE-2021-47486
Published: June 5, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91225
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-2021-47486
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 bpf_int_jit_compile() function in arch/riscv/net/bpf_jit_core.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/cac6b043cea3e120f4fccec16f7381747cbfdc0d
- https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
- https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15