#VU89258 Resource management error in Linux kernel - CVE-2021-47113
Published: May 8, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU89258
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-2021-47113
CWE-ID: CWE-399
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 improper management of internal resources within the btrfs_rename_exchange() function in fs/btrfs/inode.c. A local user can corrupt the filesystem and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.
External links
- https://git.kernel.org/stable/c/0df50d47d17401f9f140dfbe752a65e5d72f9932
- https://git.kernel.org/stable/c/ff8de2cec65a8c8521faade12a31b39c80e49f5b
- https://git.kernel.org/stable/c/dc09ef3562726cd520c8338c1640872a60187af5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.43
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13