NULL pointer dereference in Linux kernel - CVE-2021-47619
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92919
CSH Severity: 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-2021-47619
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 i40e_get_lump() function in drivers/net/ethernet/intel/i40e/i40e_main.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/d46fa4ea9756ef6cbcf9752d0832cc66e2d7121b
- https://git.kernel.org/stable/c/be6998f232b8e4ca8225029e305b8329d89bfd59
- https://git.kernel.org/stable/c/768eb705e6381f0c70ca29d4e66f19790d5d19a1
- https://git.kernel.org/stable/c/00eddb0e4ea115154581d1049507a996acfc2d3e
- https://git.kernel.org/stable/c/4b3aa858268b7b9aeef02e5f9c4cd8f8fac101c8
- https://git.kernel.org/stable/c/92947844b8beee988c0ce17082b705c2f75f0742
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.228
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.96
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.176