MEDIUM
CVE-2021-37600
CWE-190Published: July 30, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in a way that leads to a large number in the /proc/sysvipc/sem file. NOTE: this is unexploitable in GNU C Library environments, and possibly in all realistic environments.
Technical Analysis
CVE-2021-37600 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
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.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
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 (10)
→
https://github.com/karelzak/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1cPatch · Third Party Advisory
→
https://github.com/karelzak/util-linux/issues/1395Exploit · Issue Tracking · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210902-0002/Third Party Advisory
→
https://github.com/karelzak/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1cPatch · Third Party Advisory
→
https://github.com/karelzak/util-linux/issues/1395Exploit · Issue Tracking · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210902-0002/Third Party Advisory
Quick Facts
CVE IDCVE-2021-37600
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedJul 30, 2021
Related CVEs (CWE-190)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-37600 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.COM. CVE data is provided under the NVD usage policy.