CVE-2026-43192

Local service interruption via leaked device reference

Published May 6, 2026 · Updated May 6, 2026

Resource leak in Linux Kernel 6.19 through 6.19.5 allows local users to interrupt service through device-mapper multipath path parsing. The parse_path() ENOMEM branch returns after scsi_dh_attached_handler_name() fails but omits dm_put_device(), retaining the path-device reference. Local low-privileged access and this allocation-failure path are required; repeated leaks exhaust kernel resources without data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux Kernel 6.19 through 6.19.5 allows local users to interrupt service through device-mapper multipath path parsing. The parse_path() ENOMEM branch returns after scsi_dh_attached_handler_name() fails but omits dm_put_device(), retaining the path-device reference. Local low-privileged access and this allocation-failure path are required; repeated leaks exhaust kernel resources without data disclosure or modification.

The record

CVE
CVE-2026-43192
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 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=6.19
  2. Affected versionversion=fd81bc5cca8fc6936a8988de6b5d4c5693b6587e <4aa5c37b7d8019f7296111c1add00e7214baae60
  3. Affected versionversion=fd81bc5cca8fc6936a8988de6b5d4c5693b6587e <787bd63ee661b0148ce8e1fde92b7afddd85c446

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.19; version=fd81bc5cca8fc6936a8988de6b5d4c5693b6587e <4aa5c37b7d8019f7296111c1add00e7214baae60; version=fd81bc5cca8fc6936a8988de6b5d4c5693b6587e <787bd63ee661b0148ce8e1fde92b7afddd85c446

Published CVSS scores

5.5NIST NVDCVSS: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

T1499.001Endpoint Denial of Service: OS Exhaustion Flood

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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