CVE-2026-80679 (GCVE-0-2026-80679)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:52 – Updated: 2026-08-28 06:52
VLAI
Title
s390/dasd: Fix potential NULL pointer dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Fix potential NULL pointer dereference dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD. The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL. Fix this by using the logical OR operator.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < dbf2ae34d2f1390a9fc1abf3dce7f809e022caae (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < 3000367a512b1283ca52230bf21f8c91dfbec45b (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4c (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < e156c70c505c6c9adce3b7be5a82025f00544709 (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < 3453a993a3f14c1684560ecf26585046976f6ac6 (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < 86cdfd061509bcde84f3145f7221ba64e3e53b1f (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < 96b8e09b09539f252a5eeea6baebd93c2e3779bd (git)
Affected: 91dc4a197569230683ca8bad551e655a4bf14c30 , < 9973026f572db6b67570cadc30942f3014e41079 (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.151 , ≤ 6.6.* (semver)
Unaffected: 6.12.103 , ≤ 6.12.* (semver)
Unaffected: 6.18.44 , ≤ 6.18.* (semver)
Unaffected: 7.1.8 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Fix potential NULL pointer dereference\n\ndasd_release_space() checks the implementation of the is_ese()\ndiscipline function before calling it to determine if a given device is\nan ESE DASD.\n\nThe current usage of the logical AND operator will lead to a NULL\npointer dereference as the function is called even if the function\npointer is NULL.\n\nFix this by using the logical OR operator."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:52:47.682Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-31T15:08:32+00:00",
      "cve": "CVE-2026-80679",
      "id": "CVE-2026-80679",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: s390/dasd: Fix potential NULL pointer dereference",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80679.json",
      "version": "3"
    }
  }
}



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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.