DEBIAN-CVE-2026-27171

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Source
https://security-tracker.debian.org/tracker/CVE-2026-27171
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-27171
Upstream
Published
2026-02-18T04:16:01.263Z
Modified
2026-02-21T11:01:16.664794Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

zlib before 1.3.2 allows CPU consumption via crc32combine64 and crc32combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

References

Affected packages

Debian:11 / zlib

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.2.11.dfsg-2
1:1.2.11.dfsg-2+deb11u1
1:1.2.11.dfsg-2+deb11u2
1:1.2.11.dfsg-3
1:1.2.11.dfsg-4
1:1.2.11.dfsg-4.1
1:1.2.13.dfsg-1
1:1.2.13.dfsg-2
1:1.2.13.dfsg-3
1:1.3.dfsg-1
1:1.3.dfsg-2
1:1.3.dfsg-3
1:1.3.dfsg-3.1~exp1
1:1.3.dfsg-3.1
1:1.3.dfsg+really1.3.1-1
1:1.3.dfsg+really1.3.1-2
1:1.3.dfsg+really1.3.1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json"

Debian:12 / zlib

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.2.13.dfsg-1
1:1.2.13.dfsg-2
1:1.2.13.dfsg-3
1:1.3.dfsg-1
1:1.3.dfsg-2
1:1.3.dfsg-3
1:1.3.dfsg-3.1~exp1
1:1.3.dfsg-3.1
1:1.3.dfsg+really1.3.1-1
1:1.3.dfsg+really1.3.1-2
1:1.3.dfsg+really1.3.1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json"

Debian:13 / zlib

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.3.dfsg+really1.3.1-1
1:1.3.dfsg+really1.3.1-2
1:1.3.dfsg+really1.3.1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json"

Debian:14 / zlib

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.3.dfsg+really1.3.1-1
1:1.3.dfsg+really1.3.1-2
1:1.3.dfsg+really1.3.1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json"