CVE-2026-64147 (GCVE-0-2026-64147)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
pds_core: fix debugfs_lookup dentry leak and error handling
Summary
In the Linux kernel, the following vulnerability has been resolved: pds_core: fix debugfs_lookup dentry leak and error handling debugfs_lookup() returns a dentry with an elevated reference count that must be released with dput(). The current code discards the returned dentry without calling dput(), causing a reference leak on every firmware reset recovery. Additionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup() returns ERR_PTR(-ENODEV), not NULL. The current check passes for error pointers and would call dput() on an invalid pointer, causing a crash.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2bbf2b1c20f934a054172175ccbabcc01fe69ef6 , < 60ef1675b652e912f3eb064767af4432393291fd (git)
Affected: bc90fbe0c3182157d2be100a2f6c2edbb1820677 , < 26e19622c485e53c3fdb299e822068a0542ddf0c (git)
Affected: bc90fbe0c3182157d2be100a2f6c2edbb1820677 , < 91d13e92b983e6c6d7631012c2e20ae8057de9f2 (git)
Affected: bc90fbe0c3182157d2be100a2f6c2edbb1820677 , < d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32 (git)
Affected: bc90fbe0c3182157d2be100a2f6c2edbb1820677 , < dc416e32baaeb620b9809e9e25fc7b30889686e9 (git)
Affected: 3ffe14c36985e3174933127c9efad82ac8f3fefb (git)
Affected: 6.6.16 , < 6.6.142 (semver)
Affected: 6.7.4 , < 6.8 (semver)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/debugfs.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix debugfs_lookup dentry leak and error handling\n\ndebugfs_lookup() returns a dentry with an elevated reference count that\nmust be released with dput(). The current code discards the returned\ndentry without calling dput(), causing a reference leak on every\nfirmware reset recovery.\n\nAdditionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup()\nreturns ERR_PTR(-ENODEV), not NULL. The current check passes for error\npointers and would call dput() on an invalid pointer, causing a crash."
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        "dateUpdated": "2026-07-19T15:40:38.198Z",
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        "shortName": "Linux"
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    "dateReserved": "2026-07-19T07:54:57.037Z",
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    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-21T08:07:06+00:00",
      "cve": "CVE-2026-64147",
      "id": "CVE-2026-64147",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "275",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: pds_core: fix debugfs_lookup dentry leak and error handling",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64147.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-21T12:58:50Z",
      "cve": "CVE-2026-64147",
      "id": "CVE-2026-64147",
      "initial_release_date": "2026-07-21T12:58:50Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64147",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64147.json",
      "version": "2"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.