FKIE_CVE-2026-31594
Vulnerability from fkie_nvd - Published: 2026-04-24 15:16 - Updated: 2026-06-01 17:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown
epf_ntb_epc_destroy() duplicates the teardown that the caller is
supposed to perform later. This leads to an oops when .allow_link fails
or when .drop_link is performed. The following is an example oops of the
former case:
Unable to handle kernel paging request at virtual address dead000000000108
[...]
[dead000000000108] address between user and kernel address ranges
Internal error: Oops: 0000000096000044 [#1] SMP
[...]
Call trace:
pci_epc_remove_epf+0x78/0xe0 (P)
pci_primary_epc_epf_link+0x88/0xa8
configfs_symlink+0x1f4/0x5a0
vfs_symlink+0x134/0x1d8
do_symlinkat+0x88/0x138
__arm64_sys_symlinkat+0x74/0xe0
[...]
Remove the helper, and drop pci_epc_put(). EPC device refcounting is
tied to the configfs EPC group lifetime, and pci_epc_put() in the
.drop_link path is sufficient.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "32F2F3AC-7267-4B2D-B7B6-883A16558607",
"versionEndExcluding": "6.6.136",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.12.84",
"versionStartIncluding": "6.7",
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},
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},
{
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}
],
"negate": false,
"operator": "OR"
}
]
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to perform later. This leads to an oops when .allow_link fails\nor when .drop_link is performed. The following is an example oops of the\nformer case:\n\n Unable to handle kernel paging request at virtual address dead000000000108\n [...]\n [dead000000000108] address between user and kernel address ranges\n Internal error: Oops: 0000000096000044 [#1] SMP\n [...]\n Call trace:\n pci_epc_remove_epf+0x78/0xe0 (P)\n pci_primary_epc_epf_link+0x88/0xa8\n configfs_symlink+0x1f4/0x5a0\n vfs_symlink+0x134/0x1d8\n do_symlinkat+0x88/0x138\n __arm64_sys_symlinkat+0x74/0xe0\n [...]\n\nRemove the helper, and drop pci_epc_put(). EPC device refcounting is\ntied to the configfs EPC group lifetime, and pci_epc_put() in the\n.drop_link path is sufficient."
}
],
"id": "CVE-2026-31594",
"lastModified": "2026-06-01T17:16:50.037",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2026-04-24T15:16:37.087",
"references": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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