FKIE_CVE-2026-63930

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-07-20 15:16
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: hw-consumer: fix use-after-free in error path In the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code was using list_for_each_entry() to iterate through buffers while calling iio_buffer_put() which can free the current buffer if refcount drops to 0. The list_for_each_entry() loop macro then evaluates buf->head.next to continue iteration, accessing the freed buffer. Fix this by using list_for_each_entry_safe().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29783e6b6ec0b7152a15e53a063f17537e81177d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b71893c57730809c222766e5718bb33610f11963
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d2759d49860b9a39b5cde2fb88e4b822ddf5f58f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e965627f0d442bfcae3f496c90cb653fb0917a61
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/buffer/industrialio-hw-consumer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b71893c57730809c222766e5718bb33610f11963",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "2ff615fc455acda5425c4900160cbe11cfea4449",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "d2759d49860b9a39b5cde2fb88e4b822ddf5f58f",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "29783e6b6ec0b7152a15e53a063f17537e81177d",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "e965627f0d442bfcae3f496c90cb653fb0917a61",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "a3763ae33476328cf8d661742deb9daec78eac96",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "9319c94f63ed10723afd738d79f5617daba87cc8",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            },
            {
              "lessThan": "6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4",
              "status": "affected",
              "version": "48b66f8f936f369bb1a43c12aedbfeb2975baf4c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/buffer/industrialio-hw-consumer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.16"
            },
            {
              "lessThan": "4.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: hw-consumer: fix use-after-free in error path\n\nIn the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code\nwas using list_for_each_entry() to iterate through buffers while calling\niio_buffer_put() which can free the current buffer if refcount drops to 0.\nThe list_for_each_entry() loop macro then evaluates buf-\u003ehead.next to\ncontinue iteration, accessing the freed buffer.\n\nFix this by using list_for_each_entry_safe()."
    }
  ],
  "id": "CVE-2026-63930",
  "lastModified": "2026-07-20T15:16:57.330",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T16:17:11.380",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/29783e6b6ec0b7152a15e53a063f17537e81177d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b71893c57730809c222766e5718bb33610f11963"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d2759d49860b9a39b5cde2fb88e4b822ddf5f58f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e965627f0d442bfcae3f496c90cb653fb0917a61"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



Log in or create an account to share your comment.




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.


Detection rules are retrieved from Rulezet.