CVE-2026-53324 (GCVE-0-2026-53324)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:41 – Updated: 2026-06-26 19:41
VLAI
Title
net: mana: Use pci_name() for debugfs directory naming
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: Use pci_name() for debugfs directory naming Use pci_name(pdev) for the per-device debugfs directory instead of hardcoded "0" for PFs and pci_slot_name(pdev->slot) for VFs. The previous approach had two issues: 1. pci_slot_name() dereferences pdev->slot, which can be NULL for VFs in environments like generic VFIO passthrough or nested KVM, causing a NULL pointer dereference. 2. Multiple PFs would all use "0", and VFs across different PCI domains or buses could share the same slot name, leading to -EEXIST errors from debugfs_create_dir(). pci_name(pdev) returns the unique BDF address, is always valid, and is unique across the system.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6994 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6607c17c6c5e029da03a90085db22daf518232bf , < 34dbd7b819544c99c9d96b400fe4db613f40ac4b (git)
Affected: 6607c17c6c5e029da03a90085db22daf518232bf , < 9211eb97e8f8c28bf9313ab97862d143dbbbef97 (git)
Affected: 6607c17c6c5e029da03a90085db22daf518232bf , < c116f07ab9d22bb6f355f3cf9e44c1e6a47fe559 (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Use pci_name() for debugfs directory naming\n\nUse pci_name(pdev) for the per-device debugfs directory instead of\nhardcoded \"0\" for PFs and pci_slot_name(pdev-\u003eslot) for VFs. The\nprevious approach had two issues:\n\n1. pci_slot_name() dereferences pdev-\u003eslot, which can be NULL for VFs\n   in environments like generic VFIO passthrough or nested KVM,\n   causing a NULL pointer dereference.\n\n2. Multiple PFs would all use \"0\", and VFs across different PCI\n   domains or buses could share the same slot name, leading to\n   -EEXIST errors from debugfs_create_dir().\n\npci_name(pdev) returns the unique BDF address, is always valid, and is\nunique across the system."
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}



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