CVE-2021-47427 - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c
https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6
https://lore.kernel.org/linux-cve-announce/2024052157-CVE-2021-47427-ffc6@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47427
https://www.cve.org/CVERecord?id=CVE-2021-47427

History

Wed, 11 Sep 2024 13:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-21T15:04:13.244Z

Updated: 2024-11-04T12:05:42.361Z

Reserved: 2024-05-21T14:58:30.828Z

Link: CVE-2021-47427

Vulnrichment

Updated: 2024-08-04T05:39:59.381Z

NVD

Status : Awaiting Analysis

Published: 2024-05-21T15:15:28.117

Modified: 2024-05-21T16:53:56.550

Link: CVE-2021-47427

Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47427 - Bugzilla

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