CVE-2026-98971 (GCVE-0-2026-98971)

Vulnerability from cvelistv5 – Published: 2026-10-23 12:19 – Updated: 2026-10-23 12:19
VLAI
Title
gpio: exar: initialize the ID before registering its cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: exar: initialize the ID before registering its cleanup devm_add_action_or_reset() invokes the cleanup action immediately when registering the action fails. gpio_exar_probe() currently stores the allocated ID in exar_gpio only after registering the action, so that failure makes exar_devm_ida_free() release ID 0. If the allocated ID is nonzero, this leaks that ID and can free ID 0 belonging to another device. Store the ID before registering the cleanup action so both the immediate failure path and normal device teardown release the correct allocation.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7061 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5300ebb695fa0672589ab191062392f686fca75d , < bf3d841ef12fcbec4458e2750956b738b043a226 (git)
Affected: 5300ebb695fa0672589ab191062392f686fca75d , < b78c114600ae3df90c083c72c290437b068577c8 (git)
Affected: 5300ebb695fa0672589ab191062392f686fca75d , < 01318927a9055136c207399eeb36ce07becac179 (git)
Affected: 5300ebb695fa0672589ab191062392f686fca75d , < f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2 (git)
Affected: 5300ebb695fa0672589ab191062392f686fca75d , < 4d69e74034b208588636ecc177e0dd43a7696af3 (git)
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Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.113 , ≤ 6.12.* (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.11 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-exar.c"
          ],
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          "vendor": "Linux",
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          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "semver"
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              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: exar: initialize the ID before registering its cleanup\n\ndevm_add_action_or_reset() invokes the cleanup action immediately when\nregistering the action fails.  gpio_exar_probe() currently stores the\nallocated ID in exar_gpio only after registering the action, so that\nfailure makes exar_devm_ida_free() release ID 0.  If the allocated ID is\nnonzero, this leaks that ID and can free ID 0 belonging to another device.\n\nStore the ID before registering the cleanup action so both the immediate\nfailure path and normal device teardown release the correct allocation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T12:19:44.536Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/bf3d841ef12fcbec4458e2750956b738b043a226"
        },
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          "url": "https://git.kernel.org/stable/c/b78c114600ae3df90c083c72c290437b068577c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/01318927a9055136c207399eeb36ce07becac179"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/4d69e74034b208588636ecc177e0dd43a7696af3"
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      ],
      "title": "gpio: exar: initialize the ID before registering its cleanup",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98971",
    "datePublished": "2026-10-23T12:19:44.536Z",
    "dateReserved": "2026-09-25T10:25:14.383Z",
    "dateUpdated": "2026-10-23T12:19:44.536Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "microsoft_vex": {
      "current_release_date": "2026-10-24T01:10:26.000Z",
      "cve": "CVE-2026-98971",
      "id": "msrc_CVE-2026-98971",
      "initial_release_date": "2026-10-24T01:10:26.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "gpio: exar: initialize the ID before registering its cleanup",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98971.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
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            "affectedData": [
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                "defaultStatus": "unaffected",
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                ],
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: exar: initialize the ID before registering its cleanup\n\ndevm_add_action_or_reset() invokes the cleanup action immediately when\nregistering the action fails.  gpio_exar_probe() currently stores the\nallocated ID in exar_gpio only after registering the action, so that\nfailure makes exar_devm_ida_free() release ID 0.  If the allocated ID is\nnonzero, this leaks that ID and can free ID 0 belonging to another device.\n\nStore the ID before registering the cleanup action so both the immediate\nfailure path and normal device teardown release the correct allocation."
          }
        ],
        "id": "CVE-2026-98971",
        "lastModified": "2026-10-23T13:17:18.673",
        "metrics": {},
        "published": "2026-10-23T13:17:18.673",
        "references": [
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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