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scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

Type: advisorySource: Official CVE List1 source record

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().

Announced Source revision 1
Original source ↗

CVE-2026-23216

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-23216

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "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"
  }
]
Related CVEs
CVE-2026-23216

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#39821 · Revision 1
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Publisher date
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