CVE-2021-47427 (GCVE-0-2021-47427)
Vulnerability from cvelistv5
Published
2024-05-21 15:04
Modified
2026-08-05 08:47
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: d39df158518ccc3bf24ee18082b5e100c8f014aa
Version: d39df158518ccc3bf24ee18082b5e100c8f014aa
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