DEBIAN-CVE-2026-122129

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Source
https://security-tracker.debian.org/tracker/CVE-2026-122129
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-122129.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-122129
Upstream
Published
2026-11-04T21:18:08Z
Modified
2026-11-06T01:00:51Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

CESNET ipfixcol2 2.7.1 before 2.9.0 contains a memory allocation vulnerability in Lz4Decoder::read_start_header() that allows unauthenticated attackers to exhaust memory by declaring unbounded ring buffer sizes. Attackers can open TCP connections sending LZ4 start headers with very large buffer sizes, forcing up to 4 GiB allocations per connection and denying collector service.

References

Affected packages

Debian:14 / ipfixcol2

Package

Name
ipfixcol2
Purl
pkg:deb/debian/ipfixcol2?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.0-1

Affected versions

2.*
2.8.0+20260519-1
2.8.0+20260519-2
2.8.0+20260701-1
2.8.0+20260701-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-122129.json"