#VU92189 Improper Resource Shutdown or Release in Linux kernel - CVE-2021-46953
Vulnerability identifier: #VU92189
Vulnerability risk: Low
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-46953
CWE-ID:
CWE-404
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A local privileged user can trigger resource exhaustion and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: before 4.14.233, 4.19.191, 5.4.118, 5.10.36, 5.11.20, 5.12.3, 5.13, 4.14.233, 4.14.233, 4.14.233
External links
https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724
https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b
https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4
https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d
https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8
https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01
https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277
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.
