---
id: CVE-2024-43824
title: >-
  PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in
  pci_epf_test_core_init()
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in
  pci_epf_test_core_init()


  Instead of getting the epc_features from pci_epc_get_features() API, use

  the…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 <
    97cee643a825808711cc78475fd61a30824b7a0f
  - >-
    Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 <
    af4ad016abb1632ff7ee598a6037952b495e5b80
  - >-
    Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 <
    5a5095a8bd1bd349cce1c879e5e44407a34dda8a
  - Linux 5.7
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:08:51.186456Z'
published: '2024-08-17'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:35:07.762Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-43824'
references:
  - url: 'https://git.kernel.org/stable/c/97cee643a825808711cc78475fd61a30824b7a0f'
  - url: 'https://git.kernel.org/stable/c/af4ad016abb1632ff7ee598a6037952b495e5b80'
  - url: 'https://git.kernel.org/stable/c/5a5095a8bd1bd349cce1c879e5e44407a34dda8a'
tags:
  - cve.org
epss: 0.0027
epssPercentile: 0.19137
ingestedAt: '2026-10-21T12:48:53.732Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()

Instead of getting the epc_features from pci_epc_get_features() API, use
the cached pci_epf_test::epc_features value to avoid the NULL check. Since
the NULL check is already performed in pci_epf_test_bind(), having one more
check in pci_epf_test_core_init() is redundant and it is not possible to
hit the NULL pointer dereference.

Also with commit a01e7214bef9 ("PCI: endpoint: Remove "core_init_notifier"
flag"), 'epc_features' got dereferenced without the NULL check, leading to
the following false positive Smatch warning:

  drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed 'epc_features' could be null (see line 747)

Thus, remove the redundant NULL check and also use the epc_features::
{msix_capable/msi_capable} flags directly to avoid local variables.

[kwilczynski: commit log]

## Affected

- `Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 < 97cee643a825808711cc78475fd61a30824b7a0f`
- `Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 < af4ad016abb1632ff7ee598a6037952b495e5b80`
- `Linux >= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 < 5a5095a8bd1bd349cce1c879e5e44407a34dda8a`
- `Linux 5.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.