Kernel-memory disclosure via uninitialized sensor buffer
Published Jan 19, 2025 · Updated May 11, 2026
Information disclosure in Linux 6.12 through 6.12.9 allows local users to read uninitialized kernel memory through the bh1745 IIO driver. The triggered-buffer handler populates only active channels in its local scan structure, then copies the entire partly uninitialized structure to user space. Access requires a local user able to read a triggered IIO buffer containing inactive channels; the same flaw affects 6.13-rc1 through 6.13-rc6.
Summary
What happened
Information disclosure in Linux 6.12 through 6.12.9 allows local users to read uninitialized kernel memory through the bh1745 IIO driver. The triggered-buffer handler populates only active channels in its local scan structure, then copies the entire partly uninitialized structure to user space. Access requires a local user able to read a triggered IIO buffer containing inactive channels; the same flaw affects 6.13-rc1 through 6.13-rc6.
The record
- CVE
- CVE-2024-57909
- Published
- Jan 19, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-908, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 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=6.12
- Affected versionversion=eab35358aae705b779a7c8b405474d1290175196 <1cca2a666e099aa018e5ab385f0a6e01a3053629
- Affected versionversion=eab35358aae705b779a7c8b405474d1290175196 <b62fbe3b8eedd3cf3c9ad0b7cb9f72c3f40815f0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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