DEBIAN-CVE-2026-27171

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Source
https://security-tracker.debian.org/tracker/CVE-2026-27171
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-27171
Upstream
Published
2026-02-18T04:16:01Z
Modified
2026-09-14T17:03:00Z
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 crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

References

Affected packages

Debian:12 / zlib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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
1:1.3.dfsg+really1.3.2-1
1:1.3.dfsg+really1.3.2-2
1:1.3.dfsg+really1.3.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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

Debian:13 / zlib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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
1:1.3.dfsg+really1.3.2-1
1:1.3.dfsg+really1.3.2-2
1:1.3.dfsg+really1.3.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

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

Debian:14 / zlib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:1.3.dfsg+really1.3.2-1

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/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27171.json"