CriticalFix available
rust-nix — security advisory
An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an out-of-bounds write if a user is in more than 16 /etc/groups groups.
- Products
- rust-nix
- Affected versions
- Not specified
- Fixed versions
- 0.23.0-1
- CVEs
- CVE-2021-45707
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 01:45 UTC · Revision 1
Source evidence
An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an out-of-bounds write if a user is in more than 16 /etc/groups groups.
osv:DEBIAN-CVE-2021-45707
rust-nix
Fixed versions: 0.23.0-1
rust-nix
Fixed versions: 0.23.0-1
rust-nix
Fixed versions: 0.23.0-1
Complete source record
{
"id": "a1d710e09692d4c88534f502d6700c82cb834ffbc24b217554db73577a37d8fd",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-45707",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-45707",
"summary": "An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an out-of-bounds write if a user is in more than 16 /etc/groups groups.",
"evidence": "osv:DEBIAN-CVE-2021-45707",
"products": [
{
"name": {
"value": "rust-nix",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.23.0-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/name"
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{
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],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2021-45707",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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"package": {
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"purl": "pkg:deb/debian/rust-nix?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
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"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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],
"package": {
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"purl": "pkg:deb/debian/rust-nix?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-45707.json"
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"ecosystem_specific": {
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{
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],
"package": {
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"purl": "pkg:deb/debian/rust-nix?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-45707.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:04:57.337020701Z",
"provider": "osv",
"upstream": [
"CVE-2021-45707"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-45707"
]
},
"related_cves": [
{
"value": "CVE-2021-45707",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424230,
"published_at": "2021-12-27T00:15:09.94+00:00"
}