Bug 2419914 (CVE-2023-53743)

Summary: CVE-2023-53743 kernel: Linux kernel: Denial of Service due to PCI resource leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's Peripheral Component Interconnect (PCI) subsystem. A local attacker with low privileges could exploit a vulnerability where the `release_resource()` function fails to free the resource list entry after coalescing. This resource leak could lead to a system crash, resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-12-08 07:08:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

PCI: Free released resource after coalescing

release_resource() doesn't actually free the resource or resource list
entry so free the resource list entry to avoid a leak.
Comment 1 Jon Moroney 2025-12-08 20:11:34 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120840-CVE-2023-53743-5da6@gregkh/T