Memory leak in Linux kernel - CVE-2021-47059
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90032
CSH Severity: Low
CVSS v4.0: 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-2021-47059
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the sun8i_ss_hash_run() function in drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-47059
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/1f12aaf07f61122cf5074d29714ee26f8d44b0e7
- https://git.kernel.org/stable/c/ca065a93699f8cf3f42c60eefed73086007e928e
- https://git.kernel.org/stable/c/50e7b39b808430ad49a637dc6fb72ca93b451b13
- https://git.kernel.org/stable/c/1dbc6a1e25be8575d6c4114d1d2b841a796507f7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13