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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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    "redhat_vex": {
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      "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": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-23216\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T20:40:21.955601Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T17:35:31.503Z\"}}], \"cna\": {\"title\": \"scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"ba684191437380a07b27666eb4e72748be1ea201\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"8518f072fc92921418cd9ed4268dd4f3e9a8fd75\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"275016a551ba1a068a3bd6171b18611726b67110\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"73b487d44bf4f92942629d578381f89c326ff77f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"48fe983e92de2c59d143fe38362ad17ba23ec7f3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"3835e49e146a4e6e7787b29465f1a23379b6ec44\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48354ce078c079996f89d715dfa44814b4eba01\", \"lessThan\": \"9411a89e9e7135cc459178fa77a3f1d6191ae903\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/target/iscsi/iscsi_target_util.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.250\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.200\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.163\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.124\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.70\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/target/iscsi/iscsi_target_util.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201\"}, {\"url\": \"https://git.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75\"}, {\"url\": \"https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110\"}, {\"url\": \"https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77f\"}, {\"url\": \"https://git.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3\"}, {\"url\": \"https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44\"}, {\"url\": \"https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"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().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.250\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.200\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.163\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.124\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.70\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.10\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"3.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T22:02:34.053Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-23216\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T17:53:37.958Z\", \"dateReserved\": \"2026-01-13T15:37:45.987Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-02-18T14:21:53.699Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.