CVE-2026-23256 (GCVE-0-2026-23256)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-05-11 22:03
VLAI
Title
net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Compile tested only. Issue found using code review.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < bd680e56e316be92c01568be98d85d7a6c9bd92c (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 71a56b89203ec7e5670d94a61a9b4ae617eca804 (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 3bf519e39b51cb08a93c0599870b35a23db1031e (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 52b19b3a22306fe452ec9e8ff96063f4bfb77b99 (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd (git)
Affected: 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 , < 6cbba46934aefdfb5d171e0a95aec06c24f7ca30 (git)
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Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.250 , ≤ 5.10.* (semver)
Unaffected: 5.15.200 , ≤ 5.15.* (semver)
Unaffected: 6.1.163 , ≤ 6.1.* (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: liquidio: Correcci\u00f3n de error de uno en la limpieza de VF setup_nic_devices()\n\nEn setup_nic_devices(), el bucle de inicializaci\u00f3n salta a la etiqueta setup_nic_dev_free en caso de fallo. El bucle de limpieza actual while(i--) omite el \u00edndice i que falla, causando una fuga de memoria.\n\nEsto se corrige cambiando el bucle para que itere desde el \u00edndice actual i hasta 0.\n\nSolo probado en compilaci\u00f3n. Problema encontrado mediante revisi\u00f3n de c\u00f3digo."
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              "Patch"
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            "url": "https://git.kernel.org/stable/c/71a56b89203ec7e5670d94a61a9b4ae617eca804"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bd680e56e316be92c01568be98d85d7a6c9bd92c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-193"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:08:46+00:00",
      "cve": "CVE-2026-23256",
      "id": "CVE-2026-23256",
      "initial_release_date": "2026-03-18T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23256.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-13T03:43:10Z",
      "cve": "CVE-2026-23256",
      "id": "CVE-2026-23256",
      "initial_release_date": "2026-03-19T00:27:03Z",
      "product_status:known_affected": "250",
      "product_status:known_not_affected": "13",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23256",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23256.json",
      "version": "5"
    }
  }
}



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Taxonomy of the tags.





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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.