linux-cve-announce - CVE-2023-53801: iommu/sprd: Release dma buffer to avoid memory leak

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Message-ID: <2025120942-CVE-2023-53801-6d74@gregkh>
Date: Tue,  9 Dec 2025 09:02:22 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53801: iommu/sprd: Release dma buffer to avoid memory leak

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

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

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

iommu/sprd: Release dma buffer to avoid memory leak

When attaching to a domain, the driver would alloc a DMA buffer which
is used to store address mapping table, and it need to be released
when the IOMMU domain is freed.

The Linux kernel CVE team has assigned CVE-2023-53801 to this issue.


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

	Fixed in 5.15.113 with commit 92c089a931fd3939cd32318cf4f54e69e8f51a19
	Fixed in 6.1.81 with commit 8745f3592ee4a7b49ede16ddd3f12a41ecaa23c9
	Fixed in 6.3.4 with commit d0a917fd5e3b3ed9d9306b4260ba684b982da9f3
	Fixed in 6.4 with commit 9afea57384d4ae7b2034593eac7fa76c7122762a

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-2023-53801
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/iommu/sprd-iommu.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/92c089a931fd3939cd32318cf4f54e69e8f51a19
	https://git.kernel.org/stable/c/8745f3592ee4a7b49ede16ddd3f12a41ecaa23c9
	https://git.kernel.org/stable/c/d0a917fd5e3b3ed9d9306b4260ba684b982da9f3
	https://git.kernel.org/stable/c/9afea57384d4ae7b2034593eac7fa76c7122762a