{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23193", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.985Z", "datePublished": "2026-02-14T16:27:20.251Z", "dateUpdated": "2026-02-16T08:58:56.360Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-16T08:58:56.360Z"}, "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_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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/target/iscsi/iscsi_target_util.c"], "versions": [{"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "2b64015550a13bcc72910be0565548d9a754d46d", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "fd8b0900173307039d3a84644c2fee041a7ed4fb", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "d8dbdc146e9e9a976931b78715be2e91299049f9", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "11ebafffce31efc6abeb28c509017976fc49f1ca", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "41b86a9ec037bd3435d68dd3692f0891a207e7e7", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "4530f4e4d0e6a207110b0ffed0c911bca43531a4", "status": "affected", "versionType": "git"}, {"version": "e48354ce078c079996f89d715dfa44814b4eba01", "lessThan": "84dc6037390b8607c5551047d3970336cb51ba9a", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/target/iscsi/iscsi_target_util.c"], "versions": [{"version": "3.1", "status": "affected"}, {"version": "0", "lessThan": "3.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.250", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.200", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.163", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.124", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.70", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "5.10.250"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "5.15.200"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.1.163"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.6.124"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.12.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.19"}]}]}], "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 iscsit_dec_session_usage_count()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "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_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."}, {"lang": "es", "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_session_usage_count()\n\nEn iscsit_dec_session_usage_count(), la funci\u00f3n llama a complete() mientras mantiene el sess->session_usage_lock. Similar a la l\u00f3gica de conteo de uso de la conexi\u00f3n, el hilo en espera se\u00f1alado por complete() (por ejemplo, en la ruta de liberaci\u00f3n de la sesi\u00f3n) puede despertar y liberar la estructura iscsit_session inmediatamente.\n\nEsto crea una condici\u00f3n de carrera donde el hilo actual puede intentar ejecutar spin_unlock_bh() en una estructura de sesi\u00f3n que ya ha sido desasignada, lo que resulta en un KASAN slab-uso despu\u00e9s de liberaci\u00f3n.\n\nPara resolver esto, liberar el session_usage_lock antes de llamar a complete() para asegurar que todas las desreferencias del puntero sess hayan terminado antes de que se permita al hilo en espera proceder con la desasignaci\u00f3n."}], "id": "CVE-2026-23193", "lastModified": "2026-02-18T17:52:22.253", "metrics": {}, "published": "2026-02-14T17:15:57.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()", "id": "2439887", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2439887"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-364", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()\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.\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.\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."], "name": "CVE-2026-23193", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23193\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23193\nhttps://lore.kernel.org/linux-cve-announce/2026021434-CVE-2026-23193-2c6c@gregkh/T"], "threat_severity": "Important"}