CVE-2026-31594 (GCVE-0-2026-31594)
Vulnerability from cvelistv5
Published
2026-04-24 14:42
Modified
2026-04-27 13:56
Severity ?
VLAI Severity ?
EPSS score ?
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 |
Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e35f56bb03304abc92c928b641af41ca372966bb Version: e2b6ef72b7aea9d7d480d2df499bcd1c93247abb |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/pci/endpoint/functions/pci-epf-vntb.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2",
"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
"lessThan": "73bf218de28d039126dc64281d2b47dd3c46a0a3",
"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
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"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
"lessThan": "478e776101592eb63298714e96823ef78a3295ec",
"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
"lessThan": "a7a3cab4d33fd8a8aed864c447d0d7c99e85404e",
"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
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"status": "affected",
"version": "e35f56bb03304abc92c928b641af41ca372966bb",
"versionType": "git"
},
{
"status": "affected",
"version": "e2b6ef72b7aea9d7d480d2df499bcd1c93247abb",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/pci/endpoint/functions/pci-epf-vntb.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"lessThan": "6.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.136",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.84",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.24",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.136",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.84",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.24",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.14",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.1",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1-rc1",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.15.153",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-04-27T13:56:37.210Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2"
},
{
"url": "https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3"
},
{
"url": "https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a"
},
{
"url": "https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec"
},
{
"url": "https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e"
},
{
"url": "https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54"
}
],
"title": "PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31594",
"datePublished": "2026-04-24T14:42:20.556Z",
"dateReserved": "2026-03-09T15:48:24.121Z",
"dateUpdated": "2026-04-27T13:56:37.210Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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