Integer overflow in ThreadX module allocation corrupts the object pool
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Eclipse ThreadX from 6.0.1 through 6.5.1.202602a is affected. The Module Manager adds its header size to a module's requested object size without checking the addition for overflow (CWE-190). A very large size wraps around, so the object pool serves a block too small for the header, and the manager writes past its end into a neighbouring block. A local user with low privileges can corrupt memory this way.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
A ThreadX module chooses `object_size` when it calls `txm_module_object_allocate`. The Module Manager adds its own 16-byte private header to that size and asked the object pool for the result **without checking the addition**. A size near the top of a `ULONG` wrapped, the pool served a block far smaller than the header, and the manager then wrote the header past the end of it and into the neighbouring byte-pool block.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX | 6.0.1 – 6.5.1.202602a | 6.5.2.202603 | Patch available | CNA |
- Eclipse ThreadX VendorEclipse Foundation Affected 6.0.1 – 6.5.1.202602a Fixed in 6.5.2.202603 Patch available CNA
Remediation
Upgrade Eclipse ThreadX to 6.5.2.202603, which fixes this flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Eclipse ThreadX (Eclipse Foundation) Fixed in 6.5.2.202603
Timeline
- 2026-10-20 Threatist record created from CVE-2026-95107
- 2026-10-20 CISA SSVC decision points changed
- 2026-10-20 Priority changed: MEDIUM → LOW
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Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences