SECUFOCUSNOW
Home›CVE index›CVE-2023-54326
Review reviewHigh

CVE-2023-54326

Linux

In the Linux kernel, the following vulnerability has been resolved: misc: pci_endpoint_test: Free IRQs before removing the device In pci_endpoint_test_remove(), freeing the IRQs after removing the device creates a small race window for IRQs to be received with the test device memory already released, causing the IRQ handler to access invalid memory, resulting in an oops. Free the device IRQs before removing the device to avoid this issue.

CVSS
7.8
EPSS
0.13%
2.59% percentile
CISA KEV
Not listed
Published
2025.12.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.13%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: misc: pci_endpoint_test: Free IRQs before removing the device In pci_endpoint_test_remove(), freeing the IRQs after removing the device creates a small race window for IRQs to be received with the test device memory already released, causing the IRQ handler to access invalid memory, resulting in an oops. Free the device IRQs before removing the device to avoid this issue.

Affected product and versions

Product
Linux
Affected versions
>= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < fb7f8bdb886f2ebf35ee5edaf2bf5f02b063ddb7, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < dd2210379205fcd23a9d8869b0cef90e3770577c, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < cdf9a7e2cdc7a5464e3cc6d0b715ba2b1d215521, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < 14bdee38e96c7d37ca15e7bea50411eee25fe315, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < c2dba13bc0c62b79a3cbe4bfe5faa32231bf9b55, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < 38d12bcf4e2ce3d285eb29644a79a54f42040fab, >= e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 < f61b7634a3249d12b9daa36ffbdb9965b6f24c6c, >= 4.19
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux 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
Not available
CVE-2023-54326 — Linux | SECUFOCUS NOW