#VU90025 Memory leak in Linux kernel - CVE-2021-47071
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90025
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-2021-47071
CWE-ID: CWE-401
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 leak within the hv_uio_probe() function in drivers/uio/uio_hv_generic.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/cdd91637d4ef33e2be19a8e16e72e7d00c996d76
- https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354
- https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827
- https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.122