Vulnerability identifier: #VU63656
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:
CWE-ID:
CWE-400
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 improper control consumption of internal resources in non-blocking socket in llcp_sock_connect() function. A local 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 5.11.14, 5.11.14
External links
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5WKTOC76KMH/
https://www.openwall.com/lists/oss-security/2020/11/01/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUAZT2EUMFH5/
https://www.openwall.com/lists/oss-security/2020/11/01/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VEIEGQXUW37YHZ5MTAZTDCIMHUN26NJS/
https://security.netapp.com/advisory/ntap-20210702-0008/
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.