Physical memory disclosure via unrestricted kernel mapping
Published Sep 13, 2026 · Updated Sep 13, 2026
Information disclosure in Ludashi 6.1026.4715.714 allows local users to read physical memory through ComputerZ_x64.sys. The sub_11008 IOCTL handler passes an attacker-controlled PhysicalAddress to MmMapIoSpace without restricting the mapped address, then returns bytes from that mapping. IOCTL processing requires an administrator token, and successful use exposes kernel or other physical-memory contents.
Summary
What happened
Information disclosure in Ludashi 6.1026.4715.714 allows local users to read physical memory through ComputerZ_x64.sys. The sub_11008 IOCTL handler passes an attacker-controlled PhysicalAddress to MmMapIoSpace without restricting the mapped address, then returns bytes from that mapping. IOCTL processing requires an administrator token, and successful use exposes kernel or other physical-memory contents.
The record
- CVE
- CVE-2026-90503
- Published
- Sep 13, 2026
- Updated
- Sep 13, 2026
- Vendor
- Chengdu Qilu Technology Co., Ltd.
- Product
- Ludashi
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Sep 13, 2026CVE publishedPublication date reported by the CVE source.
- Sep 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.1026.4715.714
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
- ComputerZ_x64.sys physical-memory read proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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