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Review reviewHigh

CVE-2023-53560

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: tracing/histograms: Add histograms to hist_vars if they have referenced variables Hist triggers can have referenced variables without having direct variables fields. This can be the case if referenced variables are added for trigger actions. In this case the newly added references will not have field variables. Not taking such referenced variables into consideration can result in a bug where it would be possible to remove hist trigger with variables being refenced. This will result in a bug that is easily reproducable like...

CVSS
7.8
EPSS
0.14%
3.71% percentile
CISA KEV
Not listed
Published
2025.10.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: tracing/histograms: Add histograms to hist_vars if they have referenced variables Hist triggers can have referenced variables without having direct variables fields. This can be the case if referenced variables are added for trigger actions. In this case the newly added references will not have field variables. Not taking such referenced variables into consideration can result in a bug where it would be possible to remove hist trigger with variables being refenced. This will result in a bug that is easily reproducable like...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 4ffad1528e81c91769d9da1f8436080861c8ec67, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 4815359056083c555f97a5ee3af86519be5166de, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 1576f0df7b4d1f82db588d6654b89d796fa06929, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 97f54b330c797ed27fba8791baeaa38ace886cbd, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 5fd32eb6fa0ac795aa5a64bc004ab68d7b44196a, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 4a540f63618e525e433b37d2b5522cda08e321d7, >= 067fe038e70f6e64960d26a79c4df5f1413d0f13 < 6018b585e8c6fa7d85d4b38d9ce49a5b67be7078, >= 4.17, >= 4.17 < 4.19.291, >= 4.20 < 5.4.251, >= 5.5 < 5.10.188, >= 5.11 < 5.15.121, >= 5.16 < 6.1.40, >= 6.2 < 6.4.5, 6.5
Fixed versions
4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.40, 6.4.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2023-53560 — Linux Linux, linux kernel | SECUFOCUS NOW