CVE-2022-49121: scsi: pm8001: Fix tag leaks on error

CVE-2022-49121: scsi: pm8001: Fix tag leaks on error

[Greg Kroah-Hartman]

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

scsi: pm8001: Fix tag leaks on error

In pm8001_chip_set_dev_state_req(), pm8001_chip_fw_flash_update_req(),
pm80xx_chip_phy_ctl_req() and pm8001_chip_reg_dev_req() add missing calls
to pm8001_tag_free() to free the allocated tag when pm8001_mpi_build_cmd()
fails.

Similarly, in pm8001_exec_internal_task_abort(), if the chip ->task_abort
method fails, the tag allocated for the abort request task must be
freed. Add the missing call to pm8001_tag_free().

The Linux kernel CVE team has assigned CVE-2022-49121 to this issue.


Affected and fixed versions
===========================

	Fixed in 5.10.111 with commit a0bb65eadbf942024226241d9d99fed17168940b
	Fixed in 5.15.34 with commit 43c617eefab7077d69f5989ad3e2a273da1d728b
	Fixed in 5.16.20 with commit bdc74815f1c39905054b7d47399e0260b201b14d
	Fixed in 5.17.3 with commit 9cc72bcc1c096ed42c91646f130d4b4191580a4c
	Fixed in 5.18 with commit 4c8f04b1905cd4b776d0b720463c091545478ef7

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2022-49121
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/scsi/pm8001/pm8001_hwi.c
	drivers/scsi/pm8001/pm8001_sas.c
	drivers/scsi/pm8001/pm80xx_hwi.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/a0bb65eadbf942024226241d9d99fed17168940b
	https://git.kernel.org/stable/c/43c617eefab7077d69f5989ad3e2a273da1d728b
	https://git.kernel.org/stable/c/bdc74815f1c39905054b7d47399e0260b201b14d
	https://git.kernel.org/stable/c/9cc72bcc1c096ed42c91646f130d4b4191580a4c
	https://git.kernel.org/stable/c/4c8f04b1905cd4b776d0b720463c091545478ef7