Vulnerability-Lookup

GHSA-JFX6-G684-5HPW

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-04 18:30

Details

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

uacce: fix isolate sysfs check condition

uacce supports the device isolation feature. If the driver implements the isolate_err_threshold_read and isolate_err_threshold_write callback functions, uacce will create sysfs files now. Users can read and configure the isolation policy through sysfs. Currently, sysfs files are created as long as either isolate_err_threshold_read or isolate_err_threshold_write callback functions are present.

However, accessing a non-existent callback function may cause the system to crash. Therefore, intercept the creation of sysfs if neither read nor write exists; create sysfs if either is supported, but intercept unsupported operations at the call site.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23094"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nuacce: fix isolate sysfs check condition\n\nuacce supports the device isolation feature. If the driver\nimplements the isolate_err_threshold_read and\nisolate_err_threshold_write callback functions, uacce will create\nsysfs files now. Users can read and configure the isolation policy\nthrough sysfs. Currently, sysfs files are created as long as either\nisolate_err_threshold_read or isolate_err_threshold_write callback\nfunctions are present.\n\nHowever, accessing a non-existent callback function may cause the\nsystem to crash. Therefore, intercept the creation of sysfs if\nneither read nor write exists; create sysfs if either is supported,\nbut intercept unsupported operations at the call site.",
  "id": "GHSA-jfx6-g684-5hpw",
  "modified": "2026-02-04T18:30:44Z",
  "published": "2026-02-04T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23094"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82821a681d5dcce31475a65190fc39ea8f372cc0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98eec349259b1fd876f350b1c600403bcef8f85d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ab05cdcac354b1b1139918f49c6418b9005d042"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdbbb47d15ae17bf39fafec7e2028c1f8efba15e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23094 (GCVE-0-2026-23094)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-02-04 16:08

Title

uacce: fix isolate sysfs check condition

Summary

In the Linux kernel, the following vulnerability has been resolved: uacce: fix isolate sysfs check condition uacce supports the device isolation feature. If the driver implements the isolate_err_threshold_read and isolate_err_threshold_write callback functions, uacce will create sysfs files now. Users can read and configure the isolation policy through sysfs. Currently, sysfs files are created as long as either isolate_err_threshold_read or isolate_err_threshold_write callback functions are present. However, accessing a non-existent callback function may cause the system to crash. Therefore, intercept the creation of sysfs if neither read nor write exists; create sysfs if either is supported, but intercept unsupported operations at the call site.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9ab05cdcac354b1b1…
	https://git.kernel.org/stable/c/fdbbb47d15ae17bf3…
	https://git.kernel.org/stable/c/82821a681d5dcce31…
	https://git.kernel.org/stable/c/98eec349259b1fd87…

Impacted products

Vendor

Product

Version

Linux

Affected: e3e289fbc0b520cf469469e8cdba84a50424eb65 , < 9ab05cdcac354b1b1139918f49c6418b9005d042 (git)
Affected: e3e289fbc0b520cf469469e8cdba84a50424eb65 , < fdbbb47d15ae17bf39fafec7e2028c1f8efba15e (git)
Affected: e3e289fbc0b520cf469469e8cdba84a50424eb65 , < 82821a681d5dcce31475a65190fc39ea8f372cc0 (git)
Affected: e3e289fbc0b520cf469469e8cdba84a50424eb65 , < 98eec349259b1fd876f350b1c600403bcef8f85d (git)

Linux

Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc7 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/uacce/uacce.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9ab05cdcac354b1b1139918f49c6418b9005d042",
              "status": "affected",
              "version": "e3e289fbc0b520cf469469e8cdba84a50424eb65",
              "versionType": "git"
            },
            {
              "lessThan": "fdbbb47d15ae17bf39fafec7e2028c1f8efba15e",
              "status": "affected",
              "version": "e3e289fbc0b520cf469469e8cdba84a50424eb65",
              "versionType": "git"
            },
            {
              "lessThan": "82821a681d5dcce31475a65190fc39ea8f372cc0",
              "status": "affected",
              "version": "e3e289fbc0b520cf469469e8cdba84a50424eb65",
              "versionType": "git"
            },
            {
              "lessThan": "98eec349259b1fd876f350b1c600403bcef8f85d",
              "status": "affected",
              "version": "e3e289fbc0b520cf469469e8cdba84a50424eb65",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/uacce/uacce.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.122",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuacce: fix isolate sysfs check condition\n\nuacce supports the device isolation feature. If the driver\nimplements the isolate_err_threshold_read and\nisolate_err_threshold_write callback functions, uacce will create\nsysfs files now. Users can read and configure the isolation policy\nthrough sysfs. Currently, sysfs files are created as long as either\nisolate_err_threshold_read or isolate_err_threshold_write callback\nfunctions are present.\n\nHowever, accessing a non-existent callback function may cause the\nsystem to crash. Therefore, intercept the creation of sysfs if\nneither read nor write exists; create sysfs if either is supported,\nbut intercept unsupported operations at the call site."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-04T16:08:17.061Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9ab05cdcac354b1b1139918f49c6418b9005d042"
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        },
        {
          "url": "https://git.kernel.org/stable/c/82821a681d5dcce31475a65190fc39ea8f372cc0"
        },
        {
          "url": "https://git.kernel.org/stable/c/98eec349259b1fd876f350b1c600403bcef8f85d"
        }
      ],
      "title": "uacce: fix isolate sysfs check condition",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23094",
    "datePublished": "2026-02-04T16:08:17.061Z",
    "dateReserved": "2026-01-13T15:37:45.963Z",
    "dateUpdated": "2026-02-04T16:08:17.061Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-JFX6-G684-5HPW

CVE-2026-23094 (GCVE-0-2026-23094)

Tags

Sightings

Nomenclature