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CVE-2026-23216 (GCVE-0-2026-23216)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:21 – Updated: 2026-06-11 17:53
VLAI
Title
scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure. If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure. Fix this by releasing the spinlock before calling complete().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:40 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < ba684191437380a07b27666eb4e72748be1ea201 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 8518f072fc92921418cd9ed4268dd4f3e9a8fd75 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 275016a551ba1a068a3bd6171b18611726b67110 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 73b487d44bf4f92942629d578381f89c326ff77f (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 48fe983e92de2c59d143fe38362ad17ba23ec7f3 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 3835e49e146a4e6e7787b29465f1a23379b6ec44 (git)
Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 9411a89e9e7135cc459178fa77a3f1d6191ae903 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.1
Unaffected: 0 , < 3.1 (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)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: target: iscsi: Correcci\u00f3n de uso despu\u00e9s de liberaci\u00f3n en iscsit_dec_conn_usage_count()\n\nEn iscsit_dec_conn_usage_count(), la funci\u00f3n llama a complete() mientras mantiene el conn-\u0026gt;conn_usage_lock. Tan pronto como se invoca complete(), el proceso en espera (como iscsit_close_connection()) puede despertarse y proceder a liberar la estructura iscsit_conn.\n\nSi el proceso en espera libera la memoria antes de que el hilo actual alcance spin_unlock_bh(), resulta en un KASAN slab-uso despu\u00e9s de liberaci\u00f3n, ya que la funci\u00f3n intenta liberar un bloqueo dentro de la estructura de conexi\u00f3n ya liberada.\n\nEsto se corrige liberando el spinlock antes de llamar a complete()."
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                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:40:21.955601Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-02-18T15:18:42.957",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44"
          },
          {
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          },
          {
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77f"
          },
          {
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            "tags": [
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-07T01:20:50+00:00",
      "cve": "CVE-2026-23216",
      "id": "CVE-2026-23216",
      "initial_release_date": "2026-02-18T00:00:00+00:00",
      "product_status:fixed": "1776",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23216.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:37:51Z",
      "cve": "CVE-2026-23216",
      "id": "CVE-2026-23216",
      "initial_release_date": "2026-02-19T00:26:42Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "705",
      "product_status:recommended": "371",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23216",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23216.json",
      "version": "42"
    },
    "vulnrichment": {
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                    "id": "CVE-2026-23216",
                    "options": [
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                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-06-10T20:40:21.955601Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
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              }
            ],
            "providerMetadata": {
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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              "product": "Linux",
              "programFiles": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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              "vendor": "Linux",
              "versions": [
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                  "version": "3.1"
                },
                {
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                  "version": "0",
                  "versionType": "semver"
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                {
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                  "status": "unaffected",
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                  "versionType": "semver"
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                {
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                  "status": "unaffected",
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                  "versionType": "semver"
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                {
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                  "status": "unaffected",
                  "version": "6.1.163",
                  "versionType": "semver"
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                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.124",
                  "versionType": "semver"
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                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.70",
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                {
                  "lessThanOrEqual": "6.18.*",
                  "status": "unaffected",
                  "version": "6.18.10",
                  "versionType": "semver"
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()\n\nIn iscsit_dec_conn_usage_count(), the function calls complete() while\nholding the conn-\u003econn_usage_lock. As soon as complete() is invoked, the\nwaiter (such as iscsit_close_connection()) may wake up and proceed to free\nthe iscsit_conn structure.\n\nIf the waiter frees the memory before the current thread reaches\nspin_unlock_bh(), it results in a KASAN slab-use-after-free as the function\nattempts to release a lock within the already-freed connection structure.\n\nFix this by releasing the spinlock before calling complete()."
            }
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            "dateUpdated": "2026-05-11T22:02:34.053Z",
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              "url": "https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903"
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          ],
          "title": "scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()",
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        "assignerShortName": "Linux",
        "cveId": "CVE-2026-23216",
        "datePublished": "2026-02-18T14:21:53.699Z",
        "dateReserved": "2026-01-13T15:37:45.987Z",
        "dateUpdated": "2026-06-11T17:53:37.958Z",
        "state": "PUBLISHED"
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  }
}



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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

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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.


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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.