CVE-2021-20321
- Source
- https://cve.org/CVERecord?id=CVE-2021-20321
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20321.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-20321
- Aliases
-
- A-222644279
- PUB-A-222644279
- Downstream
- Related
- Published
- 2022-02-18T18:15:08.947Z
- Modified
- 2026-03-12T21:51:09.747824Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
- References
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20321.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.15"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-NA"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
}
]