{"api_version":"1","generated_at":"2026-07-24T21:11:03+00:00","cve":"CVE-2026-23193","urls":{"html":"https://cve.report/CVE-2026-23193","api":"https://cve.report/api/cve/CVE-2026-23193.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23193","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23193"},"summary":{"title":"scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()\n\nIn iscsit_dec_session_usage_count(), the function calls complete() while\nholding the sess->session_usage_lock. Similar to the connection usage count\nlogic, the waiter signaled by complete() (e.g., in the session release\npath) may wake up and free the iscsit_session structure immediately.\n\nThis creates a race condition where the current thread may attempt to\nexecute spin_unlock_bh() on a session structure that has already been\ndeallocated, resulting in a KASAN slab-use-after-free.\n\nTo resolve this, release the session_usage_lock before calling complete()\nto ensure all dereferences of the sess pointer are finished before the\nwaiter is allowed to proceed with deallocation.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-02-14 17:15:57","updated_at":"2026-04-03 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deallocation."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-04-03T13:32:25.906Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46d"},{"url":"https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb"},{"url":"https://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9"},{"url":"https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1ca"},{"url":"https://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7"},{"url":"https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4"},{"url":"https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9a"}],"title":"scsi: target: iscsi: Fix use-after-free in 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target: iscsi: Fix use-after-free in iscsit_dec_session_us","CVE":"CVE-2026-23193","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23193","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()\n\nIn iscsit_dec_session_usage_count(), the function calls complete() while\nholding the sess->session_usage_lock. Similar to the connection usage count\nlogic, the waiter signaled by complete() (e.g., in the session release\npath) may wake up and free the iscsit_session structure immediately.\n\nThis creates a race condition where the current thread may attempt to\nexecute spin_unlock_bh() on a session structure that has already been\ndeallocated, resulting in a KASAN slab-use-after-free.\n\nTo resolve this, release the session_usage_lock before calling complete()\nto ensure all dereferences of the sess pointer are finished before the\nwaiter is allowed to proceed with deallocation.","Type":"Description","Title":"scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_us"}]}}}