Code execution via unchecked D3D10 shader indices
Published Dec 30, 2022 · Updated Apr 11, 2025
Out-of-bounds writes in NVIDIA GPU Display Driver for Windows allow remote authenticated users to execute code through a crafted D3D10 shader. The user-mode D3D10 shader parser uses attacker-controlled indices from dcl_input, dcl_output, and dcl_resource_structured declarations to calculate memory addresses without bounds checks. An unprivileged user must supply a malformed shader; Cisco Talos also demonstrated the flaw crossing a Hyper-V RemoteFX guest boundary into rdvgm.exe on the host.
Summary
What happened
Out-of-bounds writes in NVIDIA GPU Display Driver for Windows allow remote authenticated users to execute code through a crafted D3D10 shader. The user-mode D3D10 shader parser uses attacker-controlled indices from dcl_input, dcl_output, and dcl_resource_structured declarations to calculate memory addresses without bounds checks. An unprivileged user must supply a malformed shader; Cisco Talos also demonstrated the flaw crossing a Hyper-V RemoteFX guest boundary into rdvgm.exe on the host.
The record
- CVE
- CVE-2022-34671
- Published
- Dec 30, 2022
- Updated
- Apr 11, 2025
- Vendor
- NVIDIA
- Product
- NVIDIA GPU Display Driver for Windows
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 30, 2022CVE publishedPublication date reported by the CVE source.
- Apr 11, 2025Record 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=All versions prior to and including 15.2, 13.7, and 11.12, and all versions prior to and including the May 2023 release
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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.
Public exploit references
- Out-of-bounds dcl_input shader proof of conceptfunctional · demonstrated
- Out-of-bounds dcl_resource_structured shader proof of conceptfunctional · demonstrated
- Undeclared dcl_output shader proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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