MEDIUM
CVE-2020-25673
CWE-400Published: May 26, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official 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.
Technical Analysis
CVE-2020-25673 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Fedora1 product(s)
fedora
Linux1 product(s)
linux kernel
netapp20 product(s)
active iq unified managercloud backupsolidfire baseboard management controller firmwaresolidfire baseboard management controllerh410c firmwareh410ch300s firmwareh300sh500s firmwareh500sh700s firmwareh700s+8
Source: NVD CPE · 24 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
http://www.openwall.com/lists/oss-security/2020/11/01/1Exploit · Mailing List · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210702-0008/Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2020/11/01/1Exploit · Mailing List · Patch · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/11/01/1Exploit · Mailing List · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210702-0008/Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2020/11/01/1Exploit · Mailing List · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2020-25673
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-400
CISA KEVNo
Affected3 vendor(s)
PublishedMay 26, 2021
Related CVEs (CWE-400)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-25673 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.