Kernel memory corruption via unrounded FIFO count
Published May 8, 2026 · Updated May 8, 2026
Out-of-bounds write in the Linux kernel ADXL380 driver allows local users to corrupt kernel memory through incorrect FIFO batching. The interrupt handler fills st->fifo_buf in enabled-channel batches without rounding down the reported FIFO entry count, so a final partial batch writes beyond the fixed buffer. Reachability requires local access to IIO buffer and scan controls, multiple enabled scan elements, and an attached ADXL380 device; corruption can disclose data, alter kernel state, or crash the system.
Summary
What happened
Out-of-bounds write in the Linux kernel ADXL380 driver allows local users to corrupt kernel memory through incorrect FIFO batching. The interrupt handler fills st->fifo_buf in enabled-channel batches without rounding down the reported FIFO entry count, so a final partial batch writes beyond the fixed buffer. Reachability requires local access to IIO buffer and scan controls, multiple enabled scan elements, and an attached ADXL380 device; corruption can disclose data, alter kernel state, or crash the system.
The record
- CVE
- CVE-2026-43307
- Published
- May 8, 2026
- Updated
- May 8, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 8, 2026CVE publishedPublication date reported by the CVE source.
- May 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
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- Affected versionversion=6.12
- Affected versionversion=df36de13677a0ebd3ab31dd2c603f9eafdf8de7d <a40f316085985f916ba1599fc303fdbc6a078e86
- Affected versionversion=df36de13677a0ebd3ab31dd2c603f9eafdf8de7d <a8e88edfd69df7b63c882aa53e61e7c078806ad7
- Affected versionversion=df36de13677a0ebd3ab31dd2c603f9eafdf8de7d <c1b14015224cfcccd5356333763f2f4f401bd810
- Affected versionversion=df36de13677a0ebd3ab31dd2c603f9eafdf8de7d <f42ddb2945ae4ce2b6f1c2e7aae9f14455a734d3
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Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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