CVE-2021-47427 (GCVE-0-2021-47427)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:04 – Updated: 2025-05-04 07:10
VLAI?
Title
scsi: iscsi: Fix iscsi_task use after free
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d39df158518ccc3bf24ee18082b5e100c8f014aa , < 1642f51ac0d4f2b55d5748094c49ff8f7191b93c (git)
Affected: d39df158518ccc3bf24ee18082b5e100c8f014aa , < 258aad75c62146453d03028a44f2f1590d58e1f6 (git)
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    Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.14.12 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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