cve-2021-47427
Vulnerability from cvelistv5
Published
2024-05-21 15:04
Modified
2024-09-11 17:33
Severity
Summary
scsi: iscsi: Fix iscsi_task use after free
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: iscsi: Fix iscsi_task use after free\n\nCommit d39df158518c (\"scsi: iscsi: Have abort handler get ref to conn\")\nadded iscsi_get_conn()/iscsi_put_conn() calls during abort handling but\nthen also changed the handling of the case where we detect an already\ncompleted task where we now end up doing a goto to the common put/cleanup\ncode. This results in a iscsi_task use after free, because the common\ncleanup code will do a put on the iscsi_task.\n\nThis reverts the goto and moves the iscsi_get_conn() to after we\u0027ve checked\nif the iscsi_task is valid."
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    "datePublished": "2024-05-21T15:04:13.244Z",
    "dateReserved": "2024-05-21T14:58:30.828Z",
    "dateUpdated": "2024-09-11T17:33:37.669Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47427\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:28.117\",\"lastModified\":\"2024-05-21T16:53:56.550\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: iscsi: Fix iscsi_task use after free\\n\\nCommit d39df158518c (\\\"scsi: iscsi: Have abort handler get ref to conn\\\")\\nadded iscsi_get_conn()/iscsi_put_conn() calls during abort handling but\\nthen also changed the handling of the case where we detect an already\\ncompleted task where we now end up doing a goto to the common put/cleanup\\ncode. This results in a iscsi_task use after free, because the common\\ncleanup code will do a put on the iscsi_task.\\n\\nThis reverts the goto and moves the iscsi_get_conn() to after we\u0027ve checked\\nif the iscsi_task is valid.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: iscsi: corrige el uso after free de iscsi_task. Confirmaci\u00f3n d39df158518c (\\\"scsi: iscsi: Have abort handler get ref to conn\\\") se agregaron llamadas iscsi_get_conn()/iscsi_put_conn() durante el manejo de abortos pero luego tambi\u00e9n cambi\u00f3 el manejo del caso en el que detectamos una tarea ya completada y ahora terminamos haciendo un acceso al c\u00f3digo com\u00fan de put/cleanup. Esto da como resultado un uso de iscsi_task despu\u00e9s de la liberaci\u00f3n, porque el c\u00f3digo de limpieza com\u00fan colocar\u00e1 iscsi_task. Esto revierte el ir a y mueve iscsi_get_conn() a despu\u00e9s de haber verificado si iscsi_task es v\u00e1lido.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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