CVE-2026-92504 (GCVE-0-2026-92504)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-18 17:55
VLAI
Title
thermal: intel: int3400: clean up ODVP on probe failures
Summary
In the Linux kernel, the following vulnerability has been resolved: thermal: intel: int3400: clean up ODVP on probe failures evaluate_odvp() creates per-ODVP sysfs files before the thermal zone and later probe resources are registered. The current unwind path only calls cleanup_odvp() from the late sysfs failure path, so failures after evaluate_odvp() but before that label, including thermal_tripless_zone_device_register() failures, leave the ODVP files and storage behind. Move the ODVP cleanup to the common ART/TRT unwind path so every failure after evaluate_odvp() releases the ODVP state. Also clear the cached ODVP pointers in cleanup_odvp(), because evaluate_odvp() can already call it for partial setup failures while probe continues.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < 5798c714fccf1b4939a98a812b9073da365172c8 (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < bfd6df12ce6781e4bf1c7177dab42a8780177960 (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < ad13e550ce51c66560bafd315eb5d09f2ee7c4ce (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < 08df725b927512fa9672b146a00766da478b6c2e (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < bc0e96267a6715fcc4b81cf980034a5e65703780 (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < d7b025d3fdf3cf8b726ce1d13f434f57477972bb (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < 169772cd2147c517be5cfda2710d17f8c90d6f10 (git)
Affected: 006f006f1e5c48e5ddd6515eab2c9a7b27ce1144 , < d83dc9ce57a746a6dca28439bcc0575d26fa6986 (git)
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Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: intel: int3400: clean up ODVP on probe failures\n\nevaluate_odvp() creates per-ODVP sysfs files before the thermal zone\nand later probe resources are registered. The current unwind path only\ncalls cleanup_odvp() from the late sysfs failure path, so failures after\nevaluate_odvp() but before that label, including\nthermal_tripless_zone_device_register() failures, leave the ODVP files\nand storage behind.\n\nMove the ODVP cleanup to the common ART/TRT unwind path so every failure\nafter evaluate_odvp() releases the ODVP state. Also clear the cached\nODVP pointers in cleanup_odvp(), because evaluate_odvp() can already call\nit for partial setup failures while probe continues."
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              "value": "AV:L - evaluate_odvp() in int3400_thermal_probe() creates odvpN attributes on the INT3400/INTC104x ACPI platform device; after a failed unwind the UAF is hit by reading those files in odvp_show(), not by a network or radio protocol payload.\nAC:H - The leak runs only when int3400_thermal_probe() fails after evaluate_odvp() but before the old free_sysfs label (thermal_tripless_zone_device_register(), sysfs_create_group() for uuids/imok, or device_create_bin_file()), or when evaluate_odvp() itself fails after allocating attrs; those are -ENOMEM/kernfs errors the attacker cannot force.\nPR:L - evaluate_odvp() creates each odvpN with mode 0444 on priv-\u003epdev-\u003edev.kobj; after probe kfree(priv) via free_art_trt without cleanup_odvp(), an unprivileged local user can open those leftover files and run odvp_show() with no CAP_SYS_ADMIN.\nUI:N - The attacker reads the leftover odvpN sysfs attributes themselves; no other user must mount media, bind int3400_thermal, or confirm a prompt.\nS:U - odvp_show() dereferences the probe-freed int3400_thermal_priv in the host kernel; this is not a VM, IOMMU, or sandbox escape.\nC:H - odvp_show() evaluates odvp_attr-\u003epriv-\u003eodvp[odvp_attr-\u003eodvp] after int3400_thermal_probe() kfree(priv) on free_art_trt, a slab UAF of int3400_thermal_priv that discloses kernel memory once that object is reclaimed.\nI:H - cleanup_odvp() used to leave priv-\u003eodvp/priv-\u003eodvp_attrs set after evaluate_odvp()\u0027s out_err path; a later evaluate_odvp() from int3400_thermal_change_mode() or INT3400_ODVP_CHANGED then writes ACPI integers through the freed odvp buffer, and remove-path cleanup_odvp() double-frees it.\nA:H - odvp_show() dereferencing the freed priv, and evaluate_odvp() writing through a dangling priv-\u003eodvp, oops or panic the kernel."
            }
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    "dateReserved": "2026-09-16T12:21:13.872Z",
    "dateUpdated": "2026-09-18T17:55:29.519Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: intel: int3400: clean up ODVP on probe failures\n\nevaluate_odvp() creates per-ODVP sysfs files before the thermal zone\nand later probe resources are registered. The current unwind path only\ncalls cleanup_odvp() from the late sysfs failure path, so failures after\nevaluate_odvp() but before that label, including\nthermal_tripless_zone_device_register() failures, leave the ODVP files\nand storage behind.\n\nMove the ODVP cleanup to the common ART/TRT unwind path so every failure\nafter evaluate_odvp() releases the ODVP state. Also clear the cached\nODVP pointers in cleanup_odvp(), because evaluate_odvp() can already call\nit for partial setup failures while probe continues."
          }
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        "lastModified": "2026-09-18T18:18:13.180",
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                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
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        "published": "2026-09-17T17:17:52.937",
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        "vulnStatus": "Received"
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    "suse_vex": {
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      "current_release_date": "2026-09-29T23:53:03Z",
      "cve": "CVE-2026-92504",
      "id": "CVE-2026-92504",
      "initial_release_date": "2026-09-18T00:13:33Z",
      "product_status:known_affected": "152",
      "product_status:known_not_affected": "195",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-92504",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-92504.json",
      "version": "6"
    }
  }
}



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Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.