#VU90648 NULL pointer dereference in Linux kernel - CVE-2021-47045
Published: June 1, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90648
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-2021-47045
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 lpfc_issue_els_plogi() function in drivers/scsi/lpfc/lpfc_els.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/a09677de458d500b00701f6036baa423d9995408
- https://git.kernel.org/stable/c/9bdcfbed2a9fe24d2c7eaa1bad7c705e18de8cc7
- https://git.kernel.org/stable/c/8dd1c125f7f838abad009b64bff5f0a11afe3cb6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13