#VU89972 Memory leak in Linux kernel - CVE-2021-47426
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU89972
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-2021-47426
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 bpf_int_jit_compile() function in arch/s390/net/bpf_jit_comp.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/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
- https://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
- https://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2
- https://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.73
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.153