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CVE-2026-31759 (GCVE-0-2026-31759)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-05-11 22:15
VLAI
Title
usb: ulpi: fix double free in ulpi_register_interface() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix double free in ulpi_register_interface() error path When device_register() fails, ulpi_register() calls put_device() on ulpi->dev. The device release callback ulpi_dev_release() drops the OF node reference and frees ulpi, but the current error path in ulpi_register_interface() then calls kfree(ulpi) again, causing a double free. Let put_device() handle the cleanup through ulpi_dev_release() and avoid freeing ulpi again in ulpi_register_interface().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 2f70ba9dae13a190673cc3f9b4aad52179738f60 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < ee248e6e941e4f2e634df2bd43e5f1ef810ab6df (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 272a9b26c336a295e4e209157fed809706c1b1f7 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < aaeae6533d77e6ed4def85baec01e2815ebbef61 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 8763f8317bb389aded32a32b08f6751cfff657d2 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 38c28fe25611099230f0965c925499bfcf46a795 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < a6e5461f076c2ef63159f18e5cdbd30b50f0bc15 (git)
Affected: 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f , < 01af542392b5d41fd659d487015a71f627accce3 (git)
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Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-415"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:28:01+00:00",
      "cve": "CVE-2026-31759",
      "id": "CVE-2026-31759",
      "initial_release_date": "2026-05-01T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: ulpi: fix double free in ulpi_register_interface() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31759.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-16T00:15:00Z",
      "cve": "CVE-2026-31759",
      "id": "CVE-2026-31759",
      "initial_release_date": "2026-05-06T01:43:02Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "500",
      "product_status:known_not_affected": "19",
      "product_status:recommended": "612",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-31759",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-31759.json",
      "version": "28"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.