CVE-2026-72125

Local code execution via ISO-TP socket race

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in Linux kernel ISO-TP allows local users to execute arbitrary code or crash the system during CAN device removal. isotp_release() re-resolves a bound net_device after ifindex unlisting, skips can_rx_unregister(), and frees a socket still referenced by a CAN filter. Exploitation requires local low-privileged access and a race with concurrent NETDEV_UNREGISTER on a bound ISO-TP socket.

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

What happened

Use-after-free in Linux kernel ISO-TP allows local users to execute arbitrary code or crash the system during CAN device removal. isotp_release() re-resolves a bound net_device after ifindex unlisting, skips can_rx_unregister(), and frees a socket still referenced by a CAN filter. Exploitation requires local low-privileged access and a race with concurrent NETDEV_UNREGISTER on a bound ISO-TP socket.

The record

CVE
CVE-2026-72125
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1068
Attack vector
local
Privileges
Unavailable

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=5.10
  2. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <0b811c4bbe3ec9ad611e90a540fe8b51b3bb8a96
  3. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <20bab8b88baac140ca3701116e1d486c7f51e311
  4. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <43884dc7963beef2328f507f4fe680bdc173eb80
  5. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7bef39ba76eb7307ed22a50329e0f5776dbeda58
  6. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <e442b62ba5a7756c17e05a77b32cdd085a2b6138

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <0b811c4bbe3ec9ad611e90a540fe8b51b3bb8a96; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <20bab8b88baac140ca3701116e1d486c7f51e311; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <43884dc7963beef2328f507f4fe680bdc173eb80; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7bef39ba76eb7307ed22a50329e0f5776dbeda58; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <e442b62ba5a7756c17e05a77b32cdd085a2b6138

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CVE ProgramCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-825Expired Pointer Dereference
T1068Exploitation for Privilege Escalation

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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