CVE-2023-53560

Kernel invalid read via dangling histogram references

Published Oct 4, 2025 · Updated Oct 4, 2025

Use-after-free in Linux kernel trace histograms allows local users to read freed kernel memory through tracefs trigger writes. The histogram setup path omits action-only variable references from hist_vars, so removal fails to detect a dependent trigger and frees state that resolve_var_refs later reads. Access requires local permission to write tracefs trigger files, and the published reproducer demonstrates a KASAN-detected invalid read in kernel context.

CVSS severity7.8
High
EPSS probability0.15%
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 trace histograms allows local users to read freed kernel memory through tracefs trigger writes. The histogram setup path omits action-only variable references from hist_vars, so removal fails to detect a dependent trigger and frees state that resolve_var_refs later reads. Access requires local permission to write tracefs trigger files, and the published reproducer demonstrates a KASAN-detected invalid read in kernel context.

The record

CVE
CVE-2023-53560
Published
Oct 4, 2025
Updated
Oct 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2025Record 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=067fe038e70f6e64960d26a79c4df5f1413d0f13 <1576f0df7b4d1f82db588d6654b89d796fa06929
  2. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4815359056083c555f97a5ee3af86519be5166de
  3. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4a540f63618e525e433b37d2b5522cda08e321d7
  4. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4ffad1528e81c91769d9da1f8436080861c8ec67
  5. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <5fd32eb6fa0ac795aa5a64bc004ab68d7b44196a
  6. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <6018b585e8c6fa7d85d4b38d9ce49a5b67be7078
  7. Affected versionversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <97f54b330c797ed27fba8791baeaa38ace886cbd
  8. Affected versionversion=4.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=067fe038e70f6e64960d26a79c4df5f1413d0f13 <1576f0df7b4d1f82db588d6654b89d796fa06929; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4815359056083c555f97a5ee3af86519be5166de; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4a540f63618e525e433b37d2b5522cda08e321d7; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <4ffad1528e81c91769d9da1f8436080861c8ec67; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <5fd32eb6fa0ac795aa5a64bc004ab68d7b44196a; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <6018b585e8c6fa7d85d4b38d9ce49a5b67be7078; version=067fe038e70f6e64960d26a79c4df5f1413d0f13 <97f54b330c797ed27fba8791baeaa38ace886cbd; version=4.17

Published CVSS scores

7.8Linux kernel CVE teamCVSS: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

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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

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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