#VU93133 Buffer overflow in Linux kernel - CVE-2021-47595
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93133
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-2021-47595
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 ets_qdisc_change() function in net/sched/sch_ets.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/81fbdd45652d8605a029e78ef14a6aaa529c4e72
- https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7a
- https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16