Kernel-memory disclosure via wrapped RGB row length
Published Apr 15, 2025 · Updated Nov 3, 2025
Out-of-bounds read in OpenRazer before 3.10.2 allows local users to disclose kernel memory through a crafted matrix_custom_frame write. The razer_attr_write_matrix_custom_frame handlers store a calculated RGB row length in an 8-bit value, allowing integer wraparound before memcpy reads beyond the supplied buffer. Access requires permission to write the device's sysfs attribute, normally limited to root or members of the device-access group, and leaked bytes are placed in RGB arguments sent to the attached USB peripheral.
Summary
What happened
Out-of-bounds read in OpenRazer before 3.10.2 allows local users to disclose kernel memory through a crafted matrix_custom_frame write. The razer_attr_write_matrix_custom_frame handlers store a calculated RGB row length in an 8-bit value, allowing integer wraparound before memcpy reads beyond the supplied buffer. Access requires permission to write the device's sysfs attribute, normally limited to root or members of the device-access group, and leaked bytes are placed in RGB arguments sent to the attached USB peripheral.
The record
- CVE
- CVE-2025-32776
- Published
- Apr 15, 2025
- Updated
- Nov 3, 2025
- Vendor
- OpenRazer
- Product
- OpenRazer
- Classifications
- CWE-125, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 15, 2025CVE publishedPublication date reported by the CVE source.
- Nov 3, 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=< 3.10.2
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
- Crafted matrix_custom_frame byte sequenceproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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