Memory leak in Linux kernel - CVE-2021-47283
Published: June 10, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91631
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-2021-47283
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 efx_nic_init_interrupt() function in drivers/net/ethernet/sfc/nic.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/8d717c9135a3340ae62d1699484850bfb4112b0c
- https://git.kernel.org/stable/c/81c4d1d83f88e15b26f4522a35cba6ffd8c5dfdd
- https://git.kernel.org/stable/c/8f03eeb6e0a0a0b8d617ee0a4bce729e47130036
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13