CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.0%
In the Linux kernel, the following vulnerability has been resolved:
scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task
Currently a use-after-free may occur if a sas_task is aborted by the upper
layer before we handle the I/O completion in mpi_ssp_completion() or
mpi_sata_completion().
In this case, the following are the two steps in handling those I/O
completions:
Call complete() to inform the upper layer handler of completion of
the I/O.
Release driver resources associated with the sas_task in
pm8001_ccb_task_free() call.
When complete() is called, the upper layer may free the sas_task. As such,
we should not touch the associated sas_task afterwards, but we do so in the
pm8001_ccb_task_free() call.
Fix by swapping the complete() and pm8001_ccb_task_free() calls ordering.
git.kernel.org/stable/c/d9d93f32534a0a80a1c26bdb0746d90a7b19c2c2
git.kernel.org/stable/c/df7abcaa1246e2537ab4016077b5443bb3c09378
git.kernel.org/stable/c/f61f9fccb2cb4bb275674a79d638704db6bc2171
git.kernel.org/stable/c/fe9ac3eaa2e387a5742b380b73a5a6bc237bf184
security-tracker.debian.org/tracker/CVE-2022-48792