CVE-2026-80781Hinoki check available

Kernel heap disclosure via premature usage dereference

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds read in the Linux kernel HID core allows physically proximate attackers to read adjacent kernel heap data through a HID device. Under CONFIG_DEBUG_FS, hid_set_field() passes field->usage plus an unchecked offset to hid_dump_input() before testing the offset against report_count. A device exposing too few usages reaches this path during PicoLCD framebuffer tile processing, producing a four-byte heap read for each affected tile.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds read in the Linux kernel HID core allows physically proximate attackers to read adjacent kernel heap data through a HID device. Under CONFIG_DEBUG_FS, hid_set_field() passes field->usage plus an unchecked offset to hid_dump_input() before testing the offset against report_count. A device exposing too few usages reaches this path during PicoLCD framebuffer tile processing, producing a four-byte heap read for each affected tile.

The record

CVE
CVE-2026-80781
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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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  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <313ead1abed945544703b100a12c5a10fdf78409
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <465544b3d6602cfbdc2305d5cbfb7f4954353b63
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4993e1ab85d7d3f4a40d81852170f9665483bbd8
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5215ea00a747eca34cb2f603cfef91fef76c2558
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9a1d7c5f0d82e8665715d5e47c9410c6a97e3748
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a13cdb19fcb223ed41bdab3bab42b98dba87e90b
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a38212687519f2a72f43e62dec1348a690412404
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c1d9c16af51cc6ff92a5a062617d3b022dd01078
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cbcc0e8dea499e5ca86b583372ccb1815cccc570
  10. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <313ead1abed945544703b100a12c5a10fdf78409; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <465544b3d6602cfbdc2305d5cbfb7f4954353b63; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4993e1ab85d7d3f4a40d81852170f9665483bbd8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5215ea00a747eca34cb2f603cfef91fef76c2558; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9a1d7c5f0d82e8665715d5e47c9410c6a97e3748; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a13cdb19fcb223ed41bdab3bab42b98dba87e90b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a38212687519f2a72f43e62dec1348a690412404; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c1d9c16af51cc6ff92a5a062617d3b022dd01078; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cbcc0e8dea499e5ca86b583372ccb1815cccc570; version=2.6.12

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1200Hardware Additions

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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