Out-of-bounds access via VGPIO minimum-alarm query
Published Aug 28, 2026 · Updated Aug 28, 2026
Out-of-bounds access in the LTC4282 hardware-monitor driver in Linux allows local users to access invalid kernel memory via a VGPIO alarm read. Within ltc4282_read_in(), the VGPIO hwmon_in_min_alarm branch calls the alarm reader without returning, then falls through to a VSOURCE helper that indexes the two-entry in0_1_cache array with the VGPIO channel. Reachability requires the LTC4282 driver and device plus a read of the VGPIO minimum-alarm attribute; the published record identifies the invalid access but no further security consequence.
Summary
What happened
Out-of-bounds access in the LTC4282 hardware-monitor driver in Linux allows local users to access invalid kernel memory via a VGPIO alarm read. Within ltc4282_read_in(), the VGPIO hwmon_in_min_alarm branch calls the alarm reader without returning, then falls through to a VSOURCE helper that indexes the two-entry in0_1_cache array with the VGPIO channel. Reachability requires the LTC4282 driver and device plus a read of the VGPIO minimum-alarm attribute; the published record identifies the invalid access but no further security consequence.
The record
- CVE
- CVE-2026-80696
- Published
- Aug 28, 2026
- Updated
- Aug 28, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Aug 28, 2026CVE publishedPublication date reported by the CVE source.
- Aug 28, 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=6.9
- Affected versionversion=cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <00feb1cce93dab948a299b69753d99c681d45a0b
- Affected versionversion=cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <08aee6d45eefc9e0b94c21bd442f47b21d64fa2c
- Affected versionversion=cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <338d655fe09b95a88788c6ac8b1651ca8db9ae51
- Affected versionversion=cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <a0668ac20feaa3fff9e0c0548556368dbbd2d439
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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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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