CVE-2026-94192

Module object deallocation can free a live ThreadX kernel object

State
Published
Severity
8.5 High
Published
Oct 20, 2026
Updated
Oct 20, 2026
Reserved
Sep 23, 2026

Read the record on cve.org

Description

A ThreadX module allocates the control blocks of its kernel objects from the Module Manager's object pool, and can ask for that memory back by address with `txm_module_object_deallocate`. The manager released it whatever was in it, including a control block the kernel was still using. Deallocation is not deletion: the object stays on the created list for its type, a thread stays wherever it was on the ready or suspension lists and stays schedulable, and an active timer stays on the timer list. The byte pool is meanwhile free to hand those same bytes to the next allocation.

Scores

CVSSScoreVectorSource
4.08.5 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Neclipse

Weaknesses

  • CWE-416 Use After Free
  • CWE-664 Improper Control of a Resource Through its Lifetime

Affected Products

ProductVersions
Eclipse ThreadXEclipse Foundation
  • 6.0.1 through 6.5.1.202602aAffected
  • 6.5.2.202603Not affected

References

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