CVE-2026-46009

PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown

MEDIUM

5.5

CVSS Score

Published: May 27, 2026 at 12:56 PM UTC

Updated: June 17, 2026 at 10:52 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.12 ≤ v < 5.15.2095.12 ≤ v < 6.1.1755.12 ≤ v < 6.12.865.12 ≤ v < 6.18.275.12 ≤ v < 6.6.1405.12 ≤ v < 7.0.45.12 ≤ v < 7.15.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.276.19 ≤ v < 7.0.46.2 ≤ v < 6.6.1406.7 ≤ v < 6.12.865.128b821cf761503b80d0bd052f932adfe1bc1a0088

Vendor states this is fixed in 3446beddba450c8d6f9aca2f028712ac527fead3 (fixed)

Vendor states this is fixed in 65fc57c8b8f0b31be62be291cb1bb01755cec85d (fixed)

Vendor states this is fixed in 72099f015d3c77bf2eb703d1aab113bd7a60915a (fixed)

Vendor states this is fixed in 756ca5e7ed22d9045bb4de4c981f9149278d5cd3 (fixed)

Vendor states this is fixed in c3029721b84f59e790285ad27544ed5d3cb0f2a6 (fixed)

Vendor states this is fixed in c72f6a7ea638f95c486a5cfd86e567b646027687 (fixed)

Vendor states this is fixed in e813c95e4c8edd31599081e6356e20ada30e266d (fixed)

Vendor states this is fixed in 5.12 (unaffected)

Vendor states this is fixed in 5.15.209 (unaffected)

Vendor states this is fixed in 6.1.175 (unaffected)

Vendor states this is fixed in 6.12.86 (unaffected)

Vendor states this is fixed in 6.18.27 (unaffected)