Vulnerability-Lookup

GHSA-X5R8-CMVP-6558

Vulnerability from github – Published: 2026-10-23 15:31 – Updated: 2026-10-23 15:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98971"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-23T13:17:18Z",
    "severity": null
  },
  "details": "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": "GHSA-x5r8-cmvp-6558",
  "modified": "2026-10-23T15:31:33Z",
  "published": "2026-10-23T15:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98971"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01318927a9055136c207399eeb36ce07becac179"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d69e74034b208588636ecc177e0dd43a7696af3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b78c114600ae3df90c083c72c290437b068577c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf3d841ef12fcbec4458e2750956b738b043a226"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-10-23 12:19 – Updated: 2026-10-23 12:19

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

5 references

URL	Tags
https://git.kernel.org/stable/c/bf3d841ef12fcbec4…
https://git.kernel.org/stable/c/b78c114600ae3df90…
https://git.kernel.org/stable/c/01318927a9055136c…
https://git.kernel.org/stable/c/f7ec4dbd2a073dd53…
https://git.kernel.org/stable/c/4d69e74034b208588…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5300ebb695fa0672589ab191062392f686fca75d , < bf3d841ef12fcbec4458e2750956b738b043a226 (git) Affected: 5300ebb695fa0672589ab191062392f686fca75d , < b78c114600ae3df90c083c72c290437b068577c8 (git) Affected: 5300ebb695fa0672589ab191062392f686fca75d , < 01318927a9055136c207399eeb36ce07becac179 (git) Affected: 5300ebb695fa0672589ab191062392f686fca75d , < f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2 (git) Affected: 5300ebb695fa0672589ab191062392f686fca75d , < 4d69e74034b208588636ecc177e0dd43a7696af3 (git)
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)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-exar.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5300ebb695fa0672589ab191062392f686fca75d",
              "versionType": "git"
            },
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            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
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              "versionType": "semver"
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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          "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"
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    "datePublished": "2026-10-23T12:19:44.536Z",
    "dateReserved": "2026-09-25T10:25:14.383Z",
    "dateUpdated": "2026-10-23T12:19:44.536Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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