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Vulnerability record · CVE-2020-25673 · published 26 May 2021

CVE-2020-25673: Linux kernel uncontrolled resource consumption vulnerability

Linux · Linux Kernel

A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak and eventually hanging-up the system.

5.5 CVSS 3.1 Medium EPSS 0.47% · top 62.0% CWE-400 · Uncontrolled resource consumption
5.5CVSS 3.1 base score, v2 4.9
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
12References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak and eventually hanging-up the system.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

13 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2020/11/01/1 ExploitMailing ListPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5W
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEIEGQXUW37YHZ5MTAZTDCI
https://security.netapp.com/advisory/ntap-20210702-0008/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/01/1 ExploitMailing ListPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/11/01/1 ExploitMailing ListPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5W
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEIEGQXUW37YHZ5MTAZTDCI
https://security.netapp.com/advisory/ntap-20210702-0008/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/01/1 ExploitMailing ListPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-25673), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.