Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-37600
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:45 UTC · Revision 1
Source evidence
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.
osv:CVE-2021-37600
Complete source record
{
"id": "5c6df83a80b27977ce0a3fd64f7583c3bac3a33b50450d27968cad18336c07bd",
"url": "https://osv.dev/vulnerability/CVE-2021-37600",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-37600",
"summary": "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.",
"evidence": "osv:CVE-2021-37600",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-37600",
"aliases": [
"CVE-2021-37600"
],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/util-linux/util-linux",
"type": "GIT",
"events": [
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"introduced": "0"
},
{
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},
{
"fixed": "1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c"
}
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"database_specific": {
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"cpe": "cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*",
"range": [
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{
"last_affected": "2.37.1"
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"source": "CPE_RANGE"
},
{
"range": [
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"source": "REFERENCES_COMMIT"
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}
}
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"versions": [
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"v2.13-pre7",
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"v2.13-pre5",
"v2.13-pre4",
"v2.13-pre3",
"v2.13-pre2",
"v2.13-pre1",
"v2.12r",
"v2.12r-pre1",
"v2.12q",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37600.json",
"vanir_signatures": [
{
"id": "CVE-2021-37600-adca5c5d",
"digest": {
"length": 1028,
"function_hash": "318753504687712674914122082290213738543"
},
"source": "https://github.com/util-linux/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c",
"target": {
"file": "sys-utils/ipcutils.c",
"function": "get_sem_elements"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2021-37600-b3338a03",
"digest": {
"threshold": 0.9,
"line_hashes": [
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},
"source": "https://github.com/util-linux/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c",
"target": {
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"signature_type": "Line",
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],
"vanir_signatures_modified": "2026-10-20T14:28:07Z"
}
}
],
"modified": "2026-10-20T14:28:07.160486706Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
"https://lists.debian.org/debian-lts-announce/2024/04/msg00005.html",
"https://security.gentoo.org/glsa/202401-08",
"https://security.netapp.com/advisory/ntap-20210902-0002/",
"https://github.com/karelzak/util-linux/issues/1395",
"https://github.com/karelzak/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-37600",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 389007,
"published_at": "2021-07-30T14:15:18.737+00:00"
}