CVE-2026-64023 (GCVE-0-2026-64023)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-20 13:42
VLAI
Title
gpio: aggregator: fix a potential use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: aggregator: fix a potential use-after-free On error we free aggr->lookups->dev_id before removing the entry from the lookup table. If a concurrent thread calls gpiod_find() before we remove the entry, it could iterate over the list and call gpiod_match_lookup_table() which unconditionally dereferences dev_id when calling strcmp(). Reverse the order of cleanup.
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
Linux Linux Affected: 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8 , < ea28b286649b70618e9dd3e895812417a7712a11 (git)
Affected: 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8 , < 7ac4183a41ba048af89eddd82fe8be64619d0871 (git)
Affected: 86f162e73d2d81ef6d819c06a3b6c2fda77a79b8 , < 30c073cab97afb31901f94de9605177b6b84367e (git)
Create a notification for this product.
Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-aggregator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ea28b286649b70618e9dd3e895812417a7712a11",
              "status": "affected",
              "version": "86f162e73d2d81ef6d819c06a3b6c2fda77a79b8",
              "versionType": "git"
            },
            {
              "lessThan": "7ac4183a41ba048af89eddd82fe8be64619d0871",
              "status": "affected",
              "version": "86f162e73d2d81ef6d819c06a3b6c2fda77a79b8",
              "versionType": "git"
            },
            {
              "lessThan": "30c073cab97afb31901f94de9605177b6b84367e",
              "status": "affected",
              "version": "86f162e73d2d81ef6d819c06a3b6c2fda77a79b8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-aggregator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: aggregator: fix a potential use-after-free\n\nOn error we free aggr-\u003elookups-\u003edev_id before removing the entry from\nthe lookup table. If a concurrent thread calls gpiod_find() before we\nremove the entry, it could iterate over the list and call\ngpiod_match_lookup_table() which unconditionally dereferences dev_id\nwhen calling strcmp(). Reverse the order of cleanup."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:42:27.952Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ea28b286649b70618e9dd3e895812417a7712a11"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ac4183a41ba048af89eddd82fe8be64619d0871"
        },
        {
          "url": "https://git.kernel.org/stable/c/30c073cab97afb31901f94de9605177b6b84367e"
        }
      ],
      "title": "gpio: aggregator: fix a potential use-after-free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64023",
    "datePublished": "2026-07-19T15:39:15.980Z",
    "dateReserved": "2026-07-19T07:54:57.027Z",
    "dateUpdated": "2026-07-20T13:42:27.952Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64023",
      "date": "2026-07-21",
      "epss": "0.00124",
      "percentile": "0.02505"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64023\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:42.317\",\"lastModified\":\"2026-07-20T15:17:03.147\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngpio: aggregator: fix a potential use-after-free\\n\\nOn error we free aggr-\u003elookups-\u003edev_id before removing the entry from\\nthe lookup table. If a concurrent thread calls gpiod_find() before we\\nremove the entry, it could iterate over the list and call\\ngpiod_match_lookup_table() which unconditionally dereferences dev_id\\nwhen calling strcmp(). Reverse the order of cleanup.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpio/gpio-aggregator.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"86f162e73d2d81ef6d819c06a3b6c2fda77a79b8\",\"lessThan\":\"ea28b286649b70618e9dd3e895812417a7712a11\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86f162e73d2d81ef6d819c06a3b6c2fda77a79b8\",\"lessThan\":\"7ac4183a41ba048af89eddd82fe8be64619d0871\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"86f162e73d2d81ef6d819c06a3b6c2fda77a79b8\",\"lessThan\":\"30c073cab97afb31901f94de9605177b6b84367e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpio/gpio-aggregator.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.34\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/30c073cab97afb31901f94de9605177b6b84367e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7ac4183a41ba048af89eddd82fe8be64619d0871\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ea28b286649b70618e9dd3e895812417a7712a11\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-22T00:50:38+00:00",
      "cve": "CVE-2026-64023",
      "id": "CVE-2026-64023",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: gpio: aggregator: fix a potential use-after-free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64023.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-21T13:01:19Z",
      "cve": "CVE-2026-64023",
      "id": "CVE-2026-64023",
      "initial_release_date": "2026-07-21T13:01:19Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64023",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64023.json",
      "version": "2"
    }
  }
}



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.