Bug 2539644 - CVE-2026-75131 NetworkManager-l2tp: NetworkManager-l2tp: Privilege escalation via pppd username injection [fedora-all]
Summary: CVE-2026-75131 NetworkManager-l2tp: NetworkManager-l2tp: Privilege escalation...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: NetworkManager-l2tp
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Douglas Kosovic
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["5189bb56-93bf-41b7-b7f2-c...
Depends On:
Blocks: CVE-2026-75131
TreeView+ depends on / blocked
 
Reported: 2026-09-23 18:41 UTC by Vladimir Vasilev
Modified: 2026-09-23 18:41 UTC (History)
2 users (show)

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


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Description Vladimir Vasilev 2026-09-23 18:41:53 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.

NetworkManager-l2tp through 1.52.4, fixed in 1.52.6, contains a privilege escalation vulnerability that allows local users with permission to create VPN connections to execute arbitrary code as root by injecting pppd options through a crafted VPN username. Attackers can embed a double-quote character or whitespace in the username to break out of the pppd options file quoting context and include the pppd plugin directive, causing the privileged pppd process to load an attacker-controlled shared object.


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