ALPINE-CVE-2021-20181

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Source
https://security.alpinelinux.org/vuln/CVE-2021-20181
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-20181
Upstream
Published
2021-05-13T16:15:07Z
Modified
2026-11-03T06:32:26Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.

References

Affected packages

Alpine:v3.16
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.17
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.18
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.19
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.20
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.21
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.22
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.23
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"
Alpine:v3.24
qemu

Package

Name
qemu
Purl
pkg:apk/alpine/qemu?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
6.0.0-r1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-20181.json"