#VU93163 Buffer overflow in Linux kernel - CVE-2021-47066
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93163
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-2021-47066
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the async_xor_offs() function in crypto/async_tx/async_xor.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/cab2e8e5997b592fdb7d02cf2387b4b8e3057174
- https://git.kernel.org/stable/c/29ffa50f33de824b5491f8239c88c4a0efdd03af
- https://git.kernel.org/stable/c/53f8208e11abd6dde9480dfcb97fecdb1bc2ac18
- https://git.kernel.org/stable/c/ceaf2966ab082bbc4d26516f97b3ca8a676e2af8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- 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