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CVE-2026-23087 (GCVE-0-2026-23087)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-09-08 08:44
VLAI
Title
scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsiback_remove() Memory allocated for struct vscsiblk_info in scsiback_probe() is not freed in scsiback_remove() leading to potential memory leaks on remove, as well as in the scsiback_probe() error paths. Fix that by freeing it in scsiback_remove().
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: d9d660f6e562a47b4065eeb7e538910b0471b988 , < a8bb3ec8d85951a56af0a72d93ccbc2aee42eef9 (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < 427b0fb30ddec3bad05dcd73b00718f98c7026d2 (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < 4a975c72429b050c234405668b742cdecc11548e (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < f86264ec0e2b102fcd49bf3e4f32fee669d482fc (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < 32e52b56056daf0f0881fd9254706acf25b4be97 (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < 24c441f0e24da175d7912095663f526ac480dc4f (git)
Affected: d9d660f6e562a47b4065eeb7e538910b0471b988 , < 901a5f309daba412e2a30364d7ec1492fa11c32c (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.18
Unaffected: 0 , < 3.18 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (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 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: xen: scsiback: Fix potential memory leak in scsiback_remove()\n\nMemory allocated for struct vscsiblk_info in scsiback_probe() is not\nfreed in scsiback_remove() leading to potential memory leaks on remove,\nas well as in the scsiback_probe() error paths. Fix that by freeing it\nin scsiback_remove()."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: xen: scsiback: Correcci\u00f3n de posible fuga de memoria en scsiback_remove()\n\nLa memoria asignada para la estructura vscsiblk_info en scsiback_probe() no es liberada en scsiback_remove(), lo que lleva a posibles fugas de memoria al eliminar, as\u00ed como en las rutas de error de scsiback_probe(). Esto se corrige liber\u00e1ndola en scsiback_remove()."
          }
        ],
        "id": "CVE-2026-23087",
        "lastModified": "2026-07-14T13:18:24.237",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-02-04T17:16:19.570",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/24c441f0e24da175d7912095663f526ac480dc4f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/32e52b56056daf0f0881fd9254706acf25b4be97"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/427b0fb30ddec3bad05dcd73b00718f98c7026d2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4a975c72429b050c234405668b742cdecc11548e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/901a5f309daba412e2a30364d7ec1492fa11c32c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a8bb3ec8d85951a56af0a72d93ccbc2aee42eef9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f86264ec0e2b102fcd49bf3e4f32fee669d482fc"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:18:41+00:00",
      "cve": "CVE-2026-23087",
      "id": "CVE-2026-23087",
      "initial_release_date": "2026-02-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23087.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.


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.