CVE-2021-47427

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 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c	Patch
https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6	Patch
https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c	Patch
https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc4::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-12-31 20:04

NVD link : CVE-2021-47427

Mitre link : CVE-2021-47427

CVE.ORG link : CVE-2021-47427

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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