Bug 2523414 - CVE-2026-44249 apache-sshd: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation [fedora-all]
Summary: CVE-2026-44249 apache-sshd: netty-handler: IPv6 subnet rule bypass due to inc...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: apache-sshd
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Mat Booth
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["fab593fb-aff4-4246-918c-7...
Depends On:
Blocks: CVE-2026-44249
TreeView+ depends on / blocked
 
Reported: 2026-08-25 12:50 UTC by Sandipan Roy
Modified: 2026-08-25 12:50 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Sandipan Roy 2026-08-25 12:50:45 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.
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