#VU93664 Buffer overflow in Linux kernel - CVE-2021-47276
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93664
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-2021-47276
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 ftrace_hash_ipmodify_update() function in kernel/trace/ftrace.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/0bc62e398bbd9e600959e610def5109957437b28
- https://git.kernel.org/stable/c/4aedc2bc2b32c93555f47c95610efb89cc1ec09b
- https://git.kernel.org/stable/c/acf671ba79c1feccc3ec7cfdcffead4efcec49e7
- https://git.kernel.org/stable/c/862dcc14f2803c556bdd73b43c27b023fafce2fb
- https://git.kernel.org/stable/c/7e4e824b109f1d41ccf223fbb0565d877d6223a2
- https://git.kernel.org/stable/c/97524384762c1fb9b3ded931498dd2047bd0de81
- https://git.kernel.org/stable/c/3e4ddeb68751fb4fb657199aed9cfd5d02796875
- https://git.kernel.org/stable/c/6c14133d2d3f768e0a35128faac8aa6ed4815051
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.195
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.273
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.273
- 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
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.126