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Description

A flaw was found in libinput. An attacker capable of deploying a Lua plugin file in specific system directories can exploit a dangling pointer vulnerability. This occurs when a garbage collection cleanup function is called, leaving a pointer that can then be printed to system logs. This could potentially expose sensitive data if the memory location is re-used, leading to information disclosure. For this exploit to work, Lua plugins must be enabled in libinput and loaded by the compositor.

PUBLISHED Reserved 2026-04-01 | Published 2026-04-01 | Updated 2026-04-01 | Assigner redhat




LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem types

Expired Pointer Dereference

Product status

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Timeline

2026-04-01:Reported to Red Hat.
2026-04-01:Made public.

Credits

Red Hat would like to thank Koen Tange (monokles.eu) for reporting this issue.

References

access.redhat.com/security/cve/CVE-2026-35094 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2453840 (RHBZ#2453840) issue-tracking

gitlab.freedesktop.org/libinput/libinput/-/work_items/1272

cve.org (CVE-2026-35094)

nvd.nist.gov (CVE-2026-35094)

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