CVE-2026-72106

Local service interruption via dm-ioctl buffer overflow

Published Aug 15, 2026 · Updated Aug 15, 2026

Buffer overflow in Linux kernel dm-ioctl before 6.6.145, 6.12.97, 6.18.40, and 7.1.5 allows local users to interrupt service. The list_version_get_info function reserves 12 bytes using sizeof(tt->version) but writes three version integers and the next field, totaling 16 bytes, into the output buffer. Reaching the ioctl path requires local low-privilege access; the documented consequence is an availability interruption, with no reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Linux kernel dm-ioctl before 6.6.145, 6.12.97, 6.18.40, and 7.1.5 allows local users to interrupt service. The list_version_get_info function reserves 12 bytes using sizeof(tt->version) but writes three version integers and the next field, totaling 16 bytes, into the output buffer. Reaching the ioctl path requires local low-privilege access; the documented consequence is an availability interruption, with no reported data disclosure or modification.

The record

CVE
CVE-2026-72106
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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.

  1. Affected versionversion=0 <6.12.97
  2. Affected versionversion=0 <6.18.40
  3. Affected versionversion=0 <6.6.145
  4. Affected versionversion=0 <7.1.5
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <29536a9ff146d9bbd618959857ed2e691cda1d21
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <76c6f845dc0c614304a6e6ee619b552f97cf24b3
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d61c12573ed9768690fdcb2bc38846a1bcb01358
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df50c24c6447c18886ed126d3d81cc7e155ea8b6
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0f5842c4e2a7dbefb52a2dc6711789bc6963e55

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.97; version=0 <6.18.40; version=0 <6.6.145; version=0 <7.1.5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <29536a9ff146d9bbd618959857ed2e691cda1d21; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <76c6f845dc0c614304a6e6ee619b552f97cf24b3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d61c12573ed9768690fdcb2bc38846a1bcb01358; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df50c24c6447c18886ed126d3d81cc7e155ea8b6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0f5842c4e2a7dbefb52a2dc6711789bc6963e55

Published CVSS scores

5.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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