CVE-2021-47427

Commit d39df158518c ("scsi: iscsi: Have abort handler get ref to conn") added iscsigetconn()/iscsiputconn() 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 iscsitask use after free, because the common cleanup code will do a put on the iscsitask.

This reverts the goto and moves the iscsigetconn() to after we've checked if the iscsi_task is valid.

References

Affected packages

Git /

Affected ranges

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47427.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "5.14"
            },
            {
                "fixed": "5.14.12"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.15-rc1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.15-rc2"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.15-rc3"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "5.15-rc4"
            }
        ]
    }
]