CVE-2025-22035

Local system crash via stale tracer private data

Published Apr 16, 2025 · Updated Aug 5, 2026

Use-after-free in Linux kernel tracing allows local users to crash the system by switching tracers while trace output is being read. During print_trace_line, tracer switching updates iter->trace->print_line but leaves event->funcs->trace using the old tracer after graph_trace_close frees iter->private without clearing it. A local user with access to tracing must read trace output while switching from function_graph to timerlat; dereferencing the stale pointer can crash the host.

CVSS severity7.8
High
EPSS probability0.30%
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 tracing allows local users to crash the system by switching tracers while trace output is being read. During print_trace_line, tracer switching updates iter->trace->print_line but leaves event->funcs->trace using the old tracer after graph_trace_close frees iter->private without clearing it. A local user with access to tracing must read trace output while switching from function_graph to timerlat; dereferencing the stale pointer can crash the host.

The record

CVE
CVE-2025-22035
Published
Apr 16, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=05319d707732c728eb721ac616a50e7978eb499a <42561fe62c3628ea3bc9623f64f047605e98857f
  2. Affected versionversion=2242640e9bd94e706acf75c60a2ab1d0e150e0fb
  3. Affected versionversion=2cb0c037c927db4ec928cc927488e52aa359786e <a2cce54c1748216535dda02e185d07a084be837e
  4. Affected versionversion=4.14.324 <4.15
  5. Affected versionversion=4.19.293 <4.20
  6. Affected versionversion=5.10.193 <5.10.236
  7. Affected versionversion=5.15.129 <5.15.180
  8. Affected versionversion=5.4.255 <5.4.292
  9. Affected versionversion=5d433eda76b66ab271f5924b26ddfec063eeb454
  10. Affected versionversion=6.1.50 <6.1.134
  11. Affected versionversion=6.4.13 <6.5
  12. Affected versionversion=6.5
  13. Affected versionversion=b8205dfed68183dc1470e83863c5ded6d7fa30a9 <de7b309139f862a44379ecd96e93c9133c69f813
  14. Affected versionversion=ce6e2b14bc094866d9173db6935da2d752f06d8b <81a85b12132c8ffe98f5ddbdc185481790aeaa1b
  15. Affected versionversion=d6b35c9a8d51032ed9890431da3ae39fe76c1ae3
  16. Affected versionversion=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <099ef3385800828b74933a96c117574637c3fb3a
  17. Affected versionversion=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <70be951bc01e4a0e10d443f3510bb17426f257fb
  18. Affected versionversion=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <7f81f27b1093e4895e87b74143c59c055c3b1906
  19. Affected versionversion=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <c85efe6e13743cac6ba4ccf144cb91f44c86231a
  20. Affected versionversion=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <f14752d66056d0c7bffe5092130409417d3baa70

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=05319d707732c728eb721ac616a50e7978eb499a <42561fe62c3628ea3bc9623f64f047605e98857f; version=2242640e9bd94e706acf75c60a2ab1d0e150e0fb; version=2cb0c037c927db4ec928cc927488e52aa359786e <a2cce54c1748216535dda02e185d07a084be837e; version=4.14.324 <4.15; version=4.19.293 <4.20; version=5.10.193 <5.10.236; version=5.15.129 <5.15.180; version=5.4.255 <5.4.292; version=5d433eda76b66ab271f5924b26ddfec063eeb454; version=6.1.50 <6.1.134; version=6.4.13 <6.5; version=6.5; version=b8205dfed68183dc1470e83863c5ded6d7fa30a9 <de7b309139f862a44379ecd96e93c9133c69f813; version=ce6e2b14bc094866d9173db6935da2d752f06d8b <81a85b12132c8ffe98f5ddbdc185481790aeaa1b; version=d6b35c9a8d51032ed9890431da3ae39fe76c1ae3; version=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <099ef3385800828b74933a96c117574637c3fb3a; version=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <70be951bc01e4a0e10d443f3510bb17426f257fb; version=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <7f81f27b1093e4895e87b74143c59c055c3b1906; version=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <c85efe6e13743cac6ba4ccf144cb91f44c86231a; version=eecb91b9f98d6427d4af5fdb8f108f52572a39e7 <f14752d66056d0c7bffe5092130409417d3baa70

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.7Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/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 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-416Use After Free
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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