CVE-2021-37600

Exp

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.

Published: 2021-07-30 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-37600 is rated Exploit Available (53.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.66%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-37600

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-37600

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.66% +0.62%
2 2026-05-04 0.06% 0.04% -0.01%
3 2025-09-06 — 0.06% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37600

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
1.2 2.0 LOW
AV:L/AC:H/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 1.9 2.9 [email protected]

Weakness enumeration for CVE-2021-37600

OS Trackers for CVE-2021-37600

vendor priority summary link
alpine — CVE-2021-37600: 1 source package rows (util-linux); 8 state rows across 8 repos (3.11-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 1. https://security.alpinelinux.org/vuln/CVE-2021-37600
debian low CVE-2021-37600 low priority: Debian including 1 source packages (util-linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-37600
gentoo normal CVE-2021-37600: 1 GLSA(s) (202401-08), 1 atom(s) (sys-apps/util-linux); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-37600
redhat low — https://access.redhat.com/security/cve/CVE-2021-37600
suse medium CVE-2021-37600 severity moderate: SUSE including 1039 source package names (0.1.0:libblkid1-2.33.2-4.16.1, 0.1.0:libfdisk1-2.33.2-4.16.1, …), 1863 product×package rows across 203 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (203 product lines)): Fixed 1668, Known Affected 157, Known Not Affected 38. https://www.suse.com/security/cve/CVE-2021-37600/
ubuntu low CVE-2021-37600 low priority: Ubuntu including 1 source packages (util-linux), 8 status rows across 8 suites (bionic, focal, hirsute, impish, jammy, trusty, upstream, xenial): not-affected 5, released 2, ignored 1. https://ubuntu.com/security/CVE-2021-37600

Affected software / configurations for CVE-2021-37600

Vendor Product Version Raw CPE
kernel util-linux <= 2.37.1 cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*
netapp ontap_select_deploy_administration_utility — cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

References for CVE-2021-37600

cvelogic Threat Intelligence