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CVE-2021-47427

scsi: iscsi: Fix iscsi_task use after free PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected d39df158518ccc3bf24ee18082b5e100c8f014aa before 1642f51ac0d4f2b55d5748094c49ff8f7191b93c; affected d39df158518ccc3bf24ee18082b5e100c8f014aa before 258aad75c62146453d03028a44f2f1590d58e1f6
Linux / Linuxaffected 5.14; unaffected 0 before 5.14; unaffected 5.14.12 through 5.14.*; unaffected 5.15 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

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No references supplied.