CVE-2026-46009 Details
Description
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to do later. This leads to an oops when .allow_link fails or when .drop_link is performed. Remove the helper. Also drop pci_epc_put(). EPC device refcounting is tied to configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.
A vulnerability exists in the Linux kernel's PCI endpoint function driver for Non-Transparent Bridging (NTB). The issue arises from a duplicate resource teardown in the 'epf_ntb_epc_destroy()' function, which interferes with proper link management. This duplication can cause a system error when the '.allow_link' operation fails or when the '.drop_link' function is called. The problem has been addressed by removing the redundant teardown helper and adjusting the reference counting for EPC devices to align with their ConfigFS group lifetimes.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d | kernel.org | Patch |
| https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a | kernel.org | Patch |
| https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c3029721b84f59e790285ad27544ed5d3cb0f2a6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c72f6a7ea638f95c486a5cfd86e567b646027687 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.12, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.86 >= 6.13, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 16, 2026 | Initial Analysis | [email protected] |
| Jun 1, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |