CVE-2026-72496: RDMA/bnxt_re: Proper rollback if the ioremap fails

CVE-2026-72496: RDMA/bnxt_re: Proper rollback if the ioremap fails

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

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

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

RDMA/bnxt_re: Proper rollback if the ioremap fails

bnxt_qplib_alloc_dpi returns success even if ioremap fails.
Add the proper rollback when the ioremap fails and return
-ENOMEM status.

The Linux kernel CVE team has assigned CVE-2026-72496 to this issue.


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

	Issue introduced in 6.5 with commit 0ac20faf5d837b59fb4c041ea320932ed47fd67f and fixed in 7.1.5 with commit 303f6fef95df5e5316970746d861cf6daeeca77f
	Issue introduced in 6.5 with commit 0ac20faf5d837b59fb4c041ea320932ed47fd67f and fixed in 7.2-rc1 with commit 87267803a8c824616eb147c5dad7030a5db6f878

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-2026-72496
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/infiniband/hw/bnxt_re/qplib_res.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/303f6fef95df5e5316970746d861cf6daeeca77f
	https://git.kernel.org/stable/c/87267803a8c824616eb147c5dad7030a5db6f878