linux-cve-announce - CVE-2023-53633: accel/qaic: Fix a leak in map_user

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Message-ID: <2025100713-CVE-2023-53633-0983@gregkh>
Date: Tue,  7 Oct 2025 17:19:38 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53633: accel/qaic: Fix a leak in map_user_pages()

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

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

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

accel/qaic: Fix a leak in map_user_pages()

If get_user_pages_fast() allocates some pages but not as many as we
wanted, then the current code leaks those pages.  Call put_page() on
the pages before returning.

The Linux kernel CVE team has assigned CVE-2023-53633 to this issue.


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

	Issue introduced in 6.4 with commit 129776ac2e38231fa9c02ce20e116c99de291666 and fixed in 6.4.7 with commit cdcba752a3d48fbe6f05cf2c91ab9497c8daad0c
	Issue introduced in 6.4 with commit 129776ac2e38231fa9c02ce20e116c99de291666 and fixed in 6.5 with commit 73274c33d961f4aa0f968f763e2c9f4210b4f4a3

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-2023-53633
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/accel/qaic/qaic_control.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/cdcba752a3d48fbe6f05cf2c91ab9497c8daad0c
	https://git.kernel.org/stable/c/73274c33d961f4aa0f968f763e2c9f4210b4f4a3