DEBIAN-CVE-2026-21863

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Source
https://security-tracker.debian.org/tracker/CVE-2026-21863
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-21863
Upstream
Published
2026-02-23T20:28:53.853Z
Modified
2026-02-24T22:30:33.775292Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an out bound read, which might result in the system crashing. The Valkey clusterbus packet processing code does not validate that a clusterbus ping extension packet is located within buffer of the clusterbus packet before attempting to read it. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue. As an additional mitigation, don't expose the cluster bus connection directly to end users, and protect the connection with its own network ACLs.

References

Affected packages

Debian:11
redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5:6.*
5:6.0.15-1
5:6.0.16-1~bpo10+1
5:6.0.16-1~bpo11+1
5:6.0.16-1
5:6.0.16-1+deb11u1
5:6.0.16-1+deb11u2
5:6.0.16-1+deb11u3
5:6.0.16-1+deb11u4
5:6.0.16-1+deb11u5
5:6.0.16-1+deb11u6
5:6.0.16-1+deb11u7
5:6.0.16-1+deb11u8
5:6.0.16-2~bpo11+1
5:6.0.16-2
5:6.0.16-3
5:6.0.16-4~bpo11+1
5:6.0.16-4
5:6.2~rc1-1
5:6.2~rc1-2
5:6.2~rc1-3
5:6.2~rc2-1
5:6.2~rc2-2
5:6.2~rc3-1
5:6.2.0-1
5:6.2.1-1
5:6.2.2-1
5:6.2.3-1
5:6.2.4-1
5:6.2.5-1
5:6.2.5-2
5:6.2.5-3
5:6.2.5-4
5:6.2.6-1
5:7.*
5:7.0~rc1-1
5:7.0~rc2-1
5:7.0~rc2-2
5:7.0~rc3-1
5:7.0.0-1
5:7.0.1-1
5:7.0.1-2
5:7.0.1-3
5:7.0.1-4
5:7.0.2-1
5:7.0.2-2
5:7.0.3-1
5:7.0.4-1~bpo11+1
5:7.0.4-1
5:7.0.5-1~bpo11+1
5:7.0.5-1
5:7.0.7-1~bpo11+1
5:7.0.7-1
5:7.0.8-1
5:7.0.8-2
5:7.0.8-3
5:7.0.8-4
5:7.0.9-1
5:7.0.10-1~bpo11+1
5:7.0.10-1
5:7.0.11-1
5:7.0.12-1
5:7.0.12-2
5:7.0.13-1
5:7.0.13-2
5:7.0.14-1
5:7.0.14-2
5:7.0.15-1~deb12u1
5:7.0.15-1~deb12u2
5:7.0.15-1~deb12u3
5:7.0.15-1~deb12u4
5:7.0.15-1~deb12u5
5:7.0.15-1~deb12u6
5:7.0.15-1
5:7.0.15-2
5:7.0.15-3
5:7.0.15-3.1
5:7.2~rc1-1
5:7.2-rc2-1
5:7.2-rc3-1
5:7.2.0-1
5:7.2.0-2
5:7.2.1-1
5:7.2.1-2
5:7.2.2-1
5:7.2.2-2
5:7.2.3-1
5:7.2.4-1
5:7.2.5-1
5:7.2.5-2
5:7.2.5-3
5:8.*
5:8.0.0-1
5:8.0.0-2
5:8.0.2-2
5:8.0.2-3
5:8.0.4-1
5:8.0.5-1
5:8.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
Debian:12
redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5:7.*
5:7.0.11-1
5:7.0.11-1+deb12u1
5:7.0.12-1
5:7.0.12-2
5:7.0.13-1
5:7.0.13-2
5:7.0.14-1
5:7.0.14-2
5:7.0.15-1~deb12u1
5:7.0.15-1~deb12u2
5:7.0.15-1~deb12u3
5:7.0.15-1~deb12u4
5:7.0.15-1~deb12u5
5:7.0.15-1~deb12u6
5:7.0.15-1
5:7.0.15-2
5:7.0.15-3
5:7.0.15-3.1
5:7.2~rc1-1
5:7.2-rc2-1
5:7.2-rc3-1
5:7.2.0-1
5:7.2.0-2
5:7.2.1-1
5:7.2.1-2
5:7.2.2-1
5:7.2.2-2
5:7.2.3-1
5:7.2.4-1
5:7.2.5-1
5:7.2.5-2
5:7.2.5-3
5:8.*
5:8.0.0-1
5:8.0.0-2
5:8.0.2-2
5:8.0.2-3
5:8.0.4-1
5:8.0.5-1
5:8.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
Debian:13
redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5:8.*
5:8.0.2-3
5:8.0.2-3+deb13u1
5:8.0.4-1
5:8.0.5-1
5:8.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
valkey

Package

Name
valkey
Purl
pkg:deb/debian/valkey?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.1.1+dfsg1-3
8.1.1+dfsg1-3+deb13u1
8.1.4+dfsg1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
Debian:14
redict

Package

Name
redict
Purl
pkg:deb/debian/redict?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*
7.3.0+ds-1
7.3.0+ds-2
7.3.0+ds-3~bpo12+1
7.3.0+ds-3
7.3.1+ds-1
7.3.2+ds-1~bpo12+1
7.3.2+ds-1
7.3.5+ds-1~bpo12+1
7.3.5+ds-1
7.3.6+ds-1~bpo12+1
7.3.6+ds-1~bpo13+1
7.3.6+ds-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
redis

Package

Name
redis
Purl
pkg:deb/debian/redis?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5:8.*
5:8.0.2-3
5:8.0.4-1
5:8.0.5-1
5:8.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
valkey

Package

Name
valkey
Purl
pkg:deb/debian/valkey?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.1.1+dfsg1-3
8.1.4+dfsg1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"