Vulnerability-Lookup

CVE-2026-23158 (GCVE-0-2026-23158)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-02-14 16:01

Title

gpio: virtuser: fix UAF in configfs release path

Summary

In the Linux kernel, the following vulnerability has been resolved: gpio: virtuser: fix UAF in configfs release path The gpio-virtuser configfs release path uses guard(mutex) to protect the device structure. However, the device is freed before the guard cleanup runs, causing mutex_unlock() to operate on freed memory. Specifically, gpio_virtuser_device_config_group_release() destroys the mutex and frees the device while still inside the guard(mutex) scope. When the function returns, the guard cleanup invokes mutex_unlock(&dev->lock), resulting in a slab use-after-free. Limit the mutex lifetime by using a scoped_guard() only around the activation check, so that the lock is released before mutex_destroy() and kfree() are called.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/815a8e3bf72811d40…
	https://git.kernel.org/stable/c/7bec90f605cfb1380…
	https://git.kernel.org/stable/c/53ad4a948a4586359…

Impacted products

Vendor

Product

Version

Linux

Affected: 91581c4b3f29e2e22aeb1a62e842d529ca638b2d , < 815a8e3bf72811d402b30bd4a53cde5e9df7a563 (git)
Affected: 91581c4b3f29e2e22aeb1a62e842d529ca638b2d , < 7bec90f605cfb138006f5ba575f2310593347110 (git)
Affected: 91581c4b3f29e2e22aeb1a62e842d529ca638b2d , < 53ad4a948a4586359b841d607c08fb16c5503230 (git)

Linux

Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.69 , ≤ 6.12.* (semver)
Unaffected: 6.18.9 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (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-virtuser.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "815a8e3bf72811d402b30bd4a53cde5e9df7a563",
              "status": "affected",
              "version": "91581c4b3f29e2e22aeb1a62e842d529ca638b2d",
              "versionType": "git"
            },
            {
              "lessThan": "7bec90f605cfb138006f5ba575f2310593347110",
              "status": "affected",
              "version": "91581c4b3f29e2e22aeb1a62e842d529ca638b2d",
              "versionType": "git"
            },
            {
              "lessThan": "53ad4a948a4586359b841d607c08fb16c5503230",
              "status": "affected",
              "version": "91581c4b3f29e2e22aeb1a62e842d529ca638b2d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-virtuser.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.69",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.69",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.9",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: virtuser: fix UAF in configfs release path\n\nThe gpio-virtuser configfs release path uses guard(mutex) to protect\nthe device structure. However, the device is freed before the guard\ncleanup runs, causing mutex_unlock() to operate on freed memory.\n\nSpecifically, gpio_virtuser_device_config_group_release() destroys\nthe mutex and frees the device while still inside the guard(mutex)\nscope. When the function returns, the guard cleanup invokes\nmutex_unlock(\u0026dev-\u003elock), resulting in a slab use-after-free.\n\nLimit the mutex lifetime by using a scoped_guard() only around the\nactivation check, so that the lock is released before mutex_destroy()\nand kfree() are called."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-14T16:01:24.568Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/815a8e3bf72811d402b30bd4a53cde5e9df7a563"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bec90f605cfb138006f5ba575f2310593347110"
        },
        {
          "url": "https://git.kernel.org/stable/c/53ad4a948a4586359b841d607c08fb16c5503230"
        }
      ],
      "title": "gpio: virtuser: fix UAF in configfs release path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23158",
    "datePublished": "2026-02-14T16:01:24.568Z",
    "dateReserved": "2026-01-13T15:37:45.978Z",
    "dateUpdated": "2026-02-14T16:01:24.568Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23158\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-14T16:15:55.967\",\"lastModified\":\"2026-02-14T16:15:55.967\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngpio: virtuser: fix UAF in configfs release path\\n\\nThe gpio-virtuser configfs release path uses guard(mutex) to protect\\nthe device structure. However, the device is freed before the guard\\ncleanup runs, causing mutex_unlock() to operate on freed memory.\\n\\nSpecifically, gpio_virtuser_device_config_group_release() destroys\\nthe mutex and frees the device while still inside the guard(mutex)\\nscope. When the function returns, the guard cleanup invokes\\nmutex_unlock(\u0026dev-\u003elock), resulting in a slab use-after-free.\\n\\nLimit the mutex lifetime by using a scoped_guard() only around the\\nactivation check, so that the lock is released before mutex_destroy()\\nand kfree() are called.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/53ad4a948a4586359b841d607c08fb16c5503230\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7bec90f605cfb138006f5ba575f2310593347110\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/815a8e3bf72811d402b30bd4a53cde5e9df7a563\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-23158

Vulnerability from fkie_nvd - Published: 2026-02-14 16:15 - Updated: 2026-02-14 16:15

Severity ?

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/53ad4a948a4586359b841d607c08fb16c5503230
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7bec90f605cfb138006f5ba575f2310593347110
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/815a8e3bf72811d402b30bd4a53cde5e9df7a563

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: virtuser: fix UAF in configfs release path\n\nThe gpio-virtuser configfs release path uses guard(mutex) to protect\nthe device structure. However, the device is freed before the guard\ncleanup runs, causing mutex_unlock() to operate on freed memory.\n\nSpecifically, gpio_virtuser_device_config_group_release() destroys\nthe mutex and frees the device while still inside the guard(mutex)\nscope. When the function returns, the guard cleanup invokes\nmutex_unlock(\u0026dev-\u003elock), resulting in a slab use-after-free.\n\nLimit the mutex lifetime by using a scoped_guard() only around the\nactivation check, so that the lock is released before mutex_destroy()\nand kfree() are called."
    }
  ],
  "id": "CVE-2026-23158",
  "lastModified": "2026-02-14T16:15:55.967",
  "metrics": {},
  "published": "2026-02-14T16:15:55.967",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/53ad4a948a4586359b841d607c08fb16c5503230"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7bec90f605cfb138006f5ba575f2310593347110"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/815a8e3bf72811d402b30bd4a53cde5e9df7a563"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-Q8WJ-QFJ9-VJFP

Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-02-14 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

gpio: virtuser: fix UAF in configfs release path

The gpio-virtuser configfs release path uses guard(mutex) to protect the device structure. However, the device is freed before the guard cleanup runs, causing mutex_unlock() to operate on freed memory.

Specifically, gpio_virtuser_device_config_group_release() destroys the mutex and frees the device while still inside the guard(mutex) scope. When the function returns, the guard cleanup invokes mutex_unlock(&dev->lock), resulting in a slab use-after-free.

Limit the mutex lifetime by using a scoped_guard() only around the activation check, so that the lock is released before mutex_destroy() and kfree() are called.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-23158"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-14T16:15:55Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: virtuser: fix UAF in configfs release path\n\nThe gpio-virtuser configfs release path uses guard(mutex) to protect\nthe device structure. However, the device is freed before the guard\ncleanup runs, causing mutex_unlock() to operate on freed memory.\n\nSpecifically, gpio_virtuser_device_config_group_release() destroys\nthe mutex and frees the device while still inside the guard(mutex)\nscope. When the function returns, the guard cleanup invokes\nmutex_unlock(\u0026dev-\u003elock), resulting in a slab use-after-free.\n\nLimit the mutex lifetime by using a scoped_guard() only around the\nactivation check, so that the lock is released before mutex_destroy()\nand kfree() are called.",
  "id": "GHSA-q8wj-qfj9-vjfp",
  "modified": "2026-02-14T18:30:15Z",
  "published": "2026-02-14T18:30:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23158"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53ad4a948a4586359b841d607c08fb16c5503230"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bec90f605cfb138006f5ba575f2310593347110"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/815a8e3bf72811d402b30bd4a53cde5e9df7a563"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2026-23158 (GCVE-0-2026-23158)

FKIE_CVE-2026-23158

GHSA-Q8WJ-QFJ9-VJFP

Tags

Sightings

Nomenclature