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CVE-2026-46009— PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown

AI Predicted 6.5 Difficulty: Moderate EPSS 0.02% · P5

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux8b821cf761503b80d0bd052f932adfe1bc1a0088< c3029721b84f59e790285ad27544ed5d3cb0f2a6affected
8b821cf761503b80d0bd052f932adfe1bc1a0088< c72f6a7ea638f95c486a5cfd86e567b646027687affected
8b821cf761503b80d0bd052f932adfe1bc1a0088< 72099f015d3c77bf2eb703d1aab113bd7a60915aaffected
8b821cf761503b80d0bd052f932adfe1bc1a0088< 756ca5e7ed22d9045bb4de4c981f9149278d5cd3affected
8b821cf761503b80d0bd052f932adfe1bc1a0088< 65fc57c8b8f0b31be62be291cb1bb01755cec85daffected
8b821cf761503b80d0bd052f932adfe1bc1a0088< e813c95e4c8edd31599081e6356e20ada30e266daffected
8b821cf761503b80d0bd052f932adfe1bc1a0088< 3446beddba450c8d6f9aca2f028712ac527fead3affected
5.12affected
… +8 more rows
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I. Basic Information for CVE-2026-46009

Vulnerability Information
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Vulnerability Title
PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于pci-epf-ntb驱动中epf_ntb_epc_destroy()重复释放资源，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 8b821cf761503b80d0bd052f932adfe1bc1a0088 ~ c3029721b84f59e790285ad27544ed5d3cb0f2a6 -
LinuxLinux 5.12 -

II. Public POCs for CVE-2026-46009

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III. Intelligence Information for CVE-2026-46009

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Patches & Fixes for CVE-2026-46009 (7)

Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total

CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-458947.8 HIGHiommu/vt-d: Clear Present bit before tearing down PASID entry
CVE-2026-459597.8 HIGHcrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree
CVE-2026-460117.8 HIGHmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work
CVE-2026-460157.8 HIGHtcp: call sk_data_ready() after listener migration
CVE-2026-458527.8 HIGHRDMA/rxe: Fix double free in rxe_srq_from_init
CVE-2026-460587.8 HIGHmedia: amphion: Fix race between m2m job_abort and device_run
CVE-2026-458617.8 HIGHgfs2: Fix slab-use-after-free in qd_put
CVE-2026-460537.8 HIGHnet: rds: fix MR cleanup on copy error

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46009

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