CVE-2025-37784

Local kernel crash via NULL perout request

Published May 1, 2025 · Updated May 23, 2026

NULL pointer dereference in the Linux kernel TI ICSS IEP driver allows local users to crash the kernel while disabling perout signaling. During icss_iep_exit(), the driver passes a NULL ptp_perout_request to icss_iep_perout_enable(), whose hardware path dereferences the absent request instead of only clearing state. Reachability requires low-privileged local access, an ICSSG device using the affected driver, and PPS or periodic-output teardown; confidentiality and integrity are not affected.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel TI ICSS IEP driver allows local users to crash the kernel while disabling perout signaling. During icss_iep_exit(), the driver passes a NULL ptp_perout_request to icss_iep_perout_enable(), whose hardware path dereferences the absent request instead of only clearing state. Reachability requires low-privileged local access, an ICSSG device using the affected driver, and PPS or periodic-output teardown; confidentiality and integrity are not affected.

The record

CVE
CVE-2025-37784
Published
May 1, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=4ac8e8bf70b436294534d06e5d500e950e20c13d <da5035d7aeadcfa44096dd34689bfed6c657f559
  2. Affected versionversion=6.12.9 <6.12.25
  3. Affected versionversion=6.13
  4. Affected versionversion=6.6.70 <6.6.88
  5. Affected versionversion=9b115361248dc6cce182a2dc030c1c70b0a9639e <7349c9e9979333abfce42da5f9025598083b59c9
  6. Affected versionversion=9b115361248dc6cce182a2dc030c1c70b0a9639e <eeec66327001421531b3fb1a2ac32efc8a2493b0
  7. Affected versionversion=d6b130fabfe197935346fe9f1e50a0947b2b1be7 <7891619d21f07a88e0275d6d43db74035aa74f69

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4ac8e8bf70b436294534d06e5d500e950e20c13d <da5035d7aeadcfa44096dd34689bfed6c657f559; version=6.12.9 <6.12.25; version=6.13; version=6.6.70 <6.6.88; version=9b115361248dc6cce182a2dc030c1c70b0a9639e <7349c9e9979333abfce42da5f9025598083b59c9; version=9b115361248dc6cce182a2dc030c1c70b0a9639e <eeec66327001421531b3fb1a2ac32efc8a2493b0; version=d6b130fabfe197935346fe9f1e50a0947b2b1be7 <7891619d21f07a88e0275d6d43db74035aa74f69

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS: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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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