CVE-2026-72100

Storage I/O hang via unreleased range lock

Published Aug 15, 2026 · Updated Aug 15, 2026

Deadlock in the Linux dm-integrity target allows local users to hang storage I/O by submitting a bio outside configured limits. The mapping path locks the request range before dm_integrity_check_limits and returns DM_MAPIO_KILL on failure without releasing that lock. Reaching the path requires local low-privileged access and an out-of-limits bio; the unreleased range lock can deadlock later I/O on the mapped device.

CVSS severity8.8
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in the Linux dm-integrity target allows local users to hang storage I/O by submitting a bio outside configured limits. The mapping path locks the request range before dm_integrity_check_limits and returns DM_MAPIO_KILL on failure without releasing that lock. Reaching the path requires local low-privileged access and an out-of-limits bio; the unreleased range lock can deadlock later I/O on the mapped device.

The record

CVE
CVE-2026-72100
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-833, T1499.004
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=6.11
  2. Affected versionversion=fb0987682c629c1d2c476f35f6fde405a5e304a4 <3d1afaa074622859678b1a1e7c1b9c0af74c89b0
  3. Affected versionversion=fb0987682c629c1d2c476f35f6fde405a5e304a4 <5a266764fadaff8b5c1fe37a186ebf9b09cb953e
  4. Affected versionversion=fb0987682c629c1d2c476f35f6fde405a5e304a4 <aa5113e7155f4ea81d2c0303ab5cb272d4b32627
  5. Affected versionversion=fb0987682c629c1d2c476f35f6fde405a5e304a4 <f7989286175f32db8605e767a1a2efc62e894dc8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=fb0987682c629c1d2c476f35f6fde405a5e304a4 <3d1afaa074622859678b1a1e7c1b9c0af74c89b0; version=fb0987682c629c1d2c476f35f6fde405a5e304a4 <5a266764fadaff8b5c1fe37a186ebf9b09cb953e; version=fb0987682c629c1d2c476f35f6fde405a5e304a4 <aa5113e7155f4ea81d2c0303ab5cb272d4b32627; version=fb0987682c629c1d2c476f35f6fde405a5e304a4 <f7989286175f32db8605e767a1a2efc62e894dc8

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.8kernel.orgCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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

CWE-833Deadlock
T1499.004Application or System Exploitation

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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