CVE-2026-43196

Memory corruption via duplicate device-tree node release

Published May 6, 2026 · Updated May 6, 2026

Double free in the TI PRUSS driver in Linux Kernel allows local users to corrupt kernel memory through a clock setup error path. The pruss_clk_mux_setup() error path lets devm_add_action_or_reset() invoke pruss_of_free_clk_provider(), which releases clk_mux_np, before of_node_put() releases the node again. Reachability requires a TI platform using the PRUSS clock multiplexer and a managed-cleanup registration failure; the duplicate release can interrupt service.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in the TI PRUSS driver in Linux Kernel allows local users to corrupt kernel memory through a clock setup error path. The pruss_clk_mux_setup() error path lets devm_add_action_or_reset() invoke pruss_of_free_clk_provider(), which releases clk_mux_np, before of_node_put() releases the node again. Reachability requires a TI platform using the PRUSS clock multiplexer and a managed-cleanup registration failure; the duplicate release can interrupt service.

The record

CVE
CVE-2026-43196
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-415
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=5.10
  2. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <04dbbb18cc9c8795c9ff47d8994bc03ebfef9d68
  3. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <24c40076e3bc3d73c839c886d6bda1da6c4d9b93
  4. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <69aa67c1e22d13e9aad4b08c86304ad8e743dcab
  5. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <80db65d4acfb9ff12d00172aed39ea8b98261aad
  6. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <818cf66d91c8ef09b01664a12d5f4ea786d64396
  7. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <b7db9953c2f8da37de498198623b05b46f8e2ca0
  8. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <dbda01bf2dfe5af33163e1e5fca1b82b619c2803
  9. Affected versionversion=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <e113339cc7d23be4948891f3a702e9dce5b47035

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.10; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <04dbbb18cc9c8795c9ff47d8994bc03ebfef9d68; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <24c40076e3bc3d73c839c886d6bda1da6c4d9b93; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <69aa67c1e22d13e9aad4b08c86304ad8e743dcab; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <80db65d4acfb9ff12d00172aed39ea8b98261aad; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <818cf66d91c8ef09b01664a12d5f4ea786d64396; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <b7db9953c2f8da37de498198623b05b46f8e2ca0; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <dbda01bf2dfe5af33163e1e5fca1b82b619c2803; version=ba59c9b43c86b2c2396acac94e41d946cbaec9fe <e113339cc7d23be4948891f3a702e9dce5b47035

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-415Double Free

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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