DEBIAN-CVE-2026-44249
Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo(). Valid public IP addresses can bypass the restrictions. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
DEBIAN-CVE-2026-44249
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-44249
netty
Source reference: /affected/0/package/name
- Affected versions
- 1:4.1.48-10
Source reference:
/affected/0/versions1:4.1.48-11Source reference:
/affected/0/versions1:4.1.48-12Source reference:
/affected/0/versions1:4.1.48-13Source reference:
/affected/0/versions1:4.1.48-14Source reference:
/affected/0/versions1:4.1.48-15Source reference:
/affected/0/versions1:4.1.48-16Source reference:
/affected/0/versions1:4.1.48-7Source reference:
/affected/0/versions1:4.1.48-7+deb12u1Source reference:
/affected/0/versions1:4.1.48-7+deb12u2Source reference:
/affected/0/versions1:4.1.48-8Source reference:
/affected/0/versions1:4.1.48-9Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
netty
Source reference: /affected/1/package/name
- Affected versions
- 1:4.1.48-10
Source reference:
/affected/1/versions1:4.1.48-10+deb13u1Source reference:
/affected/1/versions1:4.1.48-11Source reference:
/affected/1/versions1:4.1.48-12Source reference:
/affected/1/versions1:4.1.48-13Source reference:
/affected/1/versions1:4.1.48-14Source reference:
/affected/1/versions1:4.1.48-15Source reference:
/affected/1/versions1:4.1.48-16Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
netty
Source reference: /affected/2/package/name
- Affected versions
- 1:4.1.48-10
Source reference:
/affected/2/versions1:4.1.48-11Source reference:
/affected/2/versions1:4.1.48-12Source reference:
/affected/2/versions1:4.1.48-13Source reference:
/affected/2/versions1:4.1.48-14Source reference:
/affected/2/versions1:4.1.48-15Source reference:
/affected/2/versions1:4.1.48-16Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netty",
"purl": "pkg:deb/debian/netty?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:4.1.48-10",
"1:4.1.48-11",
"1:4.1.48-12",
"1:4.1.48-13",
"1:4.1.48-14",
"1:4.1.48-15",
"1:4.1.48-16",
"1:4.1.48-7",
"1:4.1.48-7+deb12u1",
"1:4.1.48-7+deb12u2",
"1:4.1.48-8",
"1:4.1.48-9"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44249.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netty",
"purl": "pkg:deb/debian/netty?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1:4.1.48-10",
"1:4.1.48-10+deb13u1",
"1:4.1.48-11",
"1:4.1.48-12",
"1:4.1.48-13",
"1:4.1.48-14",
"1:4.1.48-15",
"1:4.1.48-16"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44249.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netty",
"purl": "pkg:deb/debian/netty?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1:4.1.48-10",
"1:4.1.48-11",
"1:4.1.48-12",
"1:4.1.48-13",
"1:4.1.48-14",
"1:4.1.48-15",
"1:4.1.48-16"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44249.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57059 · Revision 1
- Added to Heist Feed
- Publisher date