• CVE-2021-47427

发布时间: 2024年6月7日

修改时间: 2025年1月4日

概要

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix iscsi_task use after free Commit d39df158518c ("scsi: iscsi: Have abort handler get ref to conn") added iscsi_get_conn()/iscsi_put_conn() calls during abort handling but then also changed the handling of the case where we detect an already completed task where we now end up doing a goto to the common put/cleanup code. This results in a iscsi_task use after free, because the common cleanup code will do a put on the iscsi_task. This reverts the goto and moves the iscsi_get_conn() to after we've checked if the iscsi_task is valid.

CVSS v3 指标

NVD openEuler
Confidentiality High None
Attack Vector Local Local
CVSS评分 7.8 5.5
Attack Complexity Low High
Privileges Required Low High
Scope Unchanged Unchanged
Integrity High None
User Interaction None None
Availability High None

安全公告

公告名 概要 发布时间
KylinSec-SA-2024-4701 In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix iscsi_task use after free Commit d39df158518c ("scsi: iscsi: Have abort handler get ref to conn") added iscsi_get_conn()/iscsi_put_conn() calls during abort handling but then also changed the handling of the case where we detect an already completed task where we now end up doing a goto to the common put/cleanup code. This results in a iscsi_task use after free, because the common cleanup code will do a put on the iscsi_task. This reverts the goto and moves the iscsi_get_conn() to after we've checked if the iscsi_task is valid. 2024年6月7日
KylinSec-SA-2024-4779 kernel security update 2024年6月7日
KylinSec-SA-2024-4961 kernel security update 2024年6月28日

影响产品

产品 状态
KY3.4-5A kernel Fixed
KY3.5.2 kernel Fixed
KY3.5.2 kernel Unaffected
V6 kernel Unaffected