Critical
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
- 0.14.1-1, 0.15.0-1, 0.15.0-2, 0.16.1-1, 0.19.0-1, 0.19.0-2, 0.23.1-1, 0.26.2-1, 0.27.1-1, 0.27.1-1build1, 0.29.0-2, 0.30.1-3
- Fixed versions
- Not specified
- CVEs
- CVE-2021-45707
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:35 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:UBUNTU-CVE-2021-45707
rust-nix
Fixed versions: Not specified
rust-nix
Fixed versions: Not specified
rust-nix
Fixed versions: Not specified
rust-nix
Fixed versions: Not specified
rust-nix
Fixed versions: Not specified
rust-nix
Fixed versions: Not specified
Complete source record
{
"id": "256374fd2d0ac7b42b0fc337f2fe5a69b85b593fed2b8f994d3f6279254b5e92",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-45707",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-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:UBUNTU-CVE-2021-45707",
"products": [
{
"name": {
"value": "rust-nix",
"evidence": "/affected/0/package/name"
},
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"affected_versions": [
{
"value": "0.14.1-1",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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{
"name": {
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"affected_versions": [
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],
"severity": "critical",
"structured": {
"id": "UBUNTU-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"
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{
"type": "Ubuntu",
"score": "medium"
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"affected": [
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"database_specific": {
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},
"ecosystem_specific": {
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],
"modified": "2026-10-17T12:55:47.838993147Z",
"provider": "osv",
"upstream": [
"CVE-2021-45707"
],
"references": [
"https://ubuntu.com/security/CVE-2021-45707",
"https://rustsec.org/advisories/RUSTSEC-2021-0119.html",
"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/nix/RUSTSEC-2021-0119.md",
"https://www.cve.org/CVERecord?id=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": 354103,
"published_at": "2021-12-27T00:15:00+00:00"
}