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CVE-2023-53363

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: PCI: Fix use-after-free in pci_bus_release_domain_nr() Commit c14f7ccc9f5d ("PCI: Assign PCI domain IDs by ida_alloc()") introd…

Published Sep 17, 2025CWE-416EPSS 0.19%

Overview

CVE-2023-53363 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

PCI: Fix use-after-free in pci_bus_release_domain_nr()

Commit c14f7ccc9f5d ("PCI: Assign PCI domain IDs by ida_alloc()")

introduced a use-after-free bug in the bus removal cleanup. The issue was

found with kfence:

[ 19.293351] BUG: KFENCE: use-after-free read in pci_bus_release_domain_nr+0x10/0x70

[ 19.302817] Use-after-free read at 0x000000007f3b80eb (in kfence-#115):

[ 19.309677] pci_bus_release_domain_nr+0x10/0x70

[ 19.309691] dw_pcie_host_deinit+0x28/0x78

[ 19.309702] tegra_pcie_deinit_controller+0x1c/0x38 [pcie_tegra194]

[ 19.309734] tegra_pcie_dw_probe+0x648/0xb28 [pcie_tegra194]

[ 19.309752] platform_probe+0x90/0xd8

...

[ 19.311457] kfence-#115: 0x00000000063a155a-0x00000000ba698da8, size=1072, cache=kmalloc-2k

[ 19.311469] allocated by task 96 on cpu 10 at 19.279323s:

[ 19.311562] __kmem_cache_alloc_node+0x260/0x278

[ 19.311571] kmalloc_trace+0x24/0x30

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/07a75c0050e59c50f038cc5f4e2a3258c8f8c9d0Refgit.kernel.org/stable/c/30ba2d09edb5ea857a1473ae3d820911347ada62Refgit.kernel.org/stable/c/52b0343c7d628f37b38e3279ba585526b850ad3bRefgit.kernel.org/stable/c/ad367516b1c09317111255ecfbf5e42c33e31918Refgit.kernel.org/stable/c/fbf45385e3419b8698b5e0a434847072375cfec2

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53363?

CVE-2023-53363 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53363?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53363?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53363?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53363 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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