CVE-2026-31594 (GCVE-0-2026-31594)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-04-27 13:56
VLAI?
Title
PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e35f56bb03304abc92c928b641af41ca372966bb , < e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2 (git)
Affected: e35f56bb03304abc92c928b641af41ca372966bb , < 73bf218de28d039126dc64281d2b47dd3c46a0a3 (git)
Affected: e35f56bb03304abc92c928b641af41ca372966bb , < cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a (git)
Affected: e35f56bb03304abc92c928b641af41ca372966bb , < 478e776101592eb63298714e96823ef78a3295ec (git)
Affected: e35f56bb03304abc92c928b641af41ca372966bb , < a7a3cab4d33fd8a8aed864c447d0d7c99e85404e (git)
Affected: e35f56bb03304abc92c928b641af41ca372966bb , < 0da63230d3ec1ec5fcc443a2314233e95bfece54 (git)
Affected: e2b6ef72b7aea9d7d480d2df499bcd1c93247abb (git)
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    Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.6.136 , ≤ 6.6.* (semver)
Unaffected: 6.12.84 , ≤ 6.12.* (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0.1 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-vntb.c"
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        }
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    "dateReserved": "2026-03-09T15:48:24.121Z",
    "dateUpdated": "2026-04-27T13:56:37.210Z",
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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