CVE-2026-72081: scsi: elx: efct: Fix I/O leak on unsupported additional CDB

From: Greg Kroah-Hartman <[email protected]>

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

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

scsi: elx: efct: Fix I/O leak on unsupported additional CDB

efct_dispatch_fcp_cmd() allocates an efct_io before dispatching an
unsolicited FCP command. If the command has an unsupported additional
CDB, the function returns -EIO before handing the IO to the SCSI layer.

Free the allocated IO before returning from this error path.

The Linux kernel CVE team has assigned CVE-2026-72081 to this issue.


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

	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 5.15.212 with commit 42a391d508e1f52fda5d81344e100a53c00898e3
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 6.1.178 with commit 9d479f50a6067954259414aa66d816c7df081286
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 6.6.145 with commit 8c689a8f229223cec4a821c65cfe40f8e8c56470
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 6.12.97 with commit 235159f75ab6f95484494db4cc031663e5ee4680
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 6.18.40 with commit df87532e9212238509f23effd0ca39d9c3062d21
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 7.1.5 with commit 94cbfed191248dc88c23fc881119bb399486ddfd
	Issue introduced in 5.14 with commit f45ae6aac0a077ca15a6e7baae0a62eef099ea7d and fixed in 7.2-rc4 with commit 9cb2d5291dbfe7bed565ead3337047dee9ed1064

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-2026-72081
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/elx/efct/efct_unsol.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/42a391d508e1f52fda5d81344e100a53c00898e3
	https://git.kernel.org/stable/c/9d479f50a6067954259414aa66d816c7df081286
	https://git.kernel.org/stable/c/8c689a8f229223cec4a821c65cfe40f8e8c56470
	https://git.kernel.org/stable/c/235159f75ab6f95484494db4cc031663e5ee4680
	https://git.kernel.org/stable/c/df87532e9212238509f23effd0ca39d9c3062d21
	https://git.kernel.org/stable/c/94cbfed191248dc88c23fc881119bb399486ddfd
	https://git.kernel.org/stable/c/9cb2d5291dbfe7bed565ead3337047dee9ed1064