Bug 2426228 (CVE-2023-54326) - CVE-2023-54326 kernel: misc: pci_endpoint_test: Free IRQs before removing the device
Summary: CVE-2023-54326 kernel: misc: pci_endpoint_test: Free IRQs before removing the...
Keywords:
Status: NEW
Alias: CVE-2023-54326
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:17 UTC by OSIDB Bzimport
Modified: 2025-12-30 23:51 UTC (History)
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Description OSIDB Bzimport 2025-12-30 13:17:54 UTC 
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.
Comment 1 Alexander B 2025-12-30 23:46:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123016-CVE-2023-54326-43b2@gregkh/T
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