Out-of-bounds read in Linux kernel - CVE-2021-47175
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90338
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-2021-47175
CWE-ID: CWE-125
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 an out-of-bounds read error within the fq_pie_qdisc_enqueue() function in net/sched/sch_fq_pie.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/e6294c06e7c62ffdd5bf3df696d3a4fcbb753d3c
- https://git.kernel.org/stable/c/7a1bdec12e43e29cc34a4394590337069d8812ce
- https://git.kernel.org/stable/c/e70f7a11876a1a788ceadf75e9e5f7af2c868680
- 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