Kernel memory disclosure via uninitialized triggered buffer
Published Jan 19, 2025 · Updated May 23, 2026
Information disclosure in the Linux kernel vcnl4035 IIO driver allows local users to read uninitialized kernel memory through triggered samples. The vcnl4035_trigger_consumer_handler function passes an aligned local buffer to userspace after regmap_read initializes only part of it, leaving at least four padding bytes unchanged. Reachability requires local access, a VCNL4035 device, and triggered capture; each returned sample can disclose residual kernel-stack data.
Summary
What happened
Information disclosure in the Linux kernel vcnl4035 IIO driver allows local users to read uninitialized kernel memory through triggered samples. The vcnl4035_trigger_consumer_handler function passes an aligned local buffer to userspace after regmap_read initializes only part of it, leaving at least four padding bytes unchanged. Reachability requires local access, a VCNL4035 device, and triggered capture; each returned sample can disclose residual kernel-stack data.
The record
- CVE
- CVE-2024-57910
- Published
- Jan 19, 2025
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-908
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2025CVE publishedPublication date reported by the CVE source.
- May 23, 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?
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- Affected versionversion=4637815d7922c4bce3bacb13dd1fb5e9a7d167d8
- Affected versionversion=49739675048d372946c1ef136c466d5675eba9f0 <b0e9c11c762e4286732d80e66c08c2cb3157b06b
- Affected versionversion=5.10.50 <5.10.234
- Affected versionversion=5.12.17 <5.13
- Affected versionversion=5.13.2 <5.14
- Affected versionversion=5.14
- Affected versionversion=5.4.132 <5.4.290
- Affected versionversion=d69f0d132563a63688efb0afb4dfeaa74a217306
- Affected versionversion=da8ef748fec2d55db0ae424ab40eee0c737564aa <13e56229fc81051a42731046e200493c4a7c28ff
- Affected versionversion=ec90b52c07c0403a6db60d752484ec08d605ead0 <47b43e53c0a0edf5578d5d12f5fc71c019649279
- Affected versionversion=ec90b52c07c0403a6db60d752484ec08d605ead0 <47d245be86492974db3aeb048609542167f56518
- Affected versionversion=ec90b52c07c0403a6db60d752484ec08d605ead0 <a15ea87d4337479c9446b5d71616f4668337afed
- Affected versionversion=ec90b52c07c0403a6db60d752484ec08d605ead0 <cb488706cdec0d6d13f2895bcdf0c32b283a7cc7
- Affected versionversion=ec90b52c07c0403a6db60d752484ec08d605ead0 <f6fb1c59776b4263634c472a5be8204c906ffc2c
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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