#VU91623 Memory leak in Linux kernel - CVE-2021-47403
Vulnerability identifier: #VU91623
Vulnerability risk: Low
CVSSv4.0: 4.3 [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-2021-47403
CWE-ID:
CWE-401
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: 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 ipoctal_port_activate() and ipoctal_cleanup() functions in drivers/ipack/devices/ipoctal.c. A local user can perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: All versions
External links
https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a
https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b
https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69
https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562
https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
