Buffer overflow in Linux kernel - CVE-2021-47137
Published: June 5, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91206
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47137
CWE-ID: CWE-119
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 escalate privileges on the system.
The vulnerability exists due to memory corruption within the xrx200_close(), xrx200_alloc_skb() and xrx200_hw_receive() functions in drivers/net/ethernet/lantiq_xrx200.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/8bb1077448d43a871ed667520763e3b9f9b7975d
- https://git.kernel.org/stable/c/5ac72351655f8b033a2935646f53b7465c903418
- https://git.kernel.org/stable/c/46dd4abced3cb2c912916f4a5353e0927db0c4a2
- https://git.kernel.org/stable/c/c7718ee96dbc2f9c5fc3b578abdf296dd44b9c20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.124