linux-cve-announce - CVE-2024-53127: Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"

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Message-ID: <2024120449-CVE-2024-53127-518c@gregkh>
Date: Wed,  4 Dec 2024 15:20:50 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53127: Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"

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

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

Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"

The commit 8396c793ffdf ("mmc: dw_mmc: Fix IDMAC operation with pages
bigger than 4K") increased the max_req_size, even for 4K pages, causing
various issues:
- Panic booting the kernel/rootfs from an SD card on Rockchip RK3566
- Panic booting the kernel/rootfs from an SD card on StarFive JH7100
- "swiotlb buffer is full" and data corruption on StarFive JH7110

At this stage no fix have been found, so it's probably better to just
revert the change.

This reverts commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890.

The Linux kernel CVE team has assigned CVE-2024-53127 to this issue.


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

	Issue introduced in 6.1.110 with commit 373f8f5b087f and fixed in 6.1.119 with commit 8f9416147d7e
	Issue introduced in 6.6.51 with commit 5b4bf3948875 and fixed in 6.6.63 with commit 56de724c58c0
	Issue introduced in 6.11 with commit 8396c793ffdf and fixed in 6.11.10 with commit a4685366f074
	Issue introduced in 6.11 with commit 8396c793ffdf and fixed in 6.12 with commit 1635e407a4a6
	Issue introduced in 4.19.322 with commit 32bd402f6760
	Issue introduced in 5.4.284 with commit b9ee16a20d99
	Issue introduced in 5.10.226 with commit 2793f4238935
	Issue introduced in 5.15.167 with commit 9d715a234dd8
	Issue introduced in 6.10.10 with commit 5b1ef10f7d49

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-2024-53127
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/mmc/host/dw_mmc.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/8f9416147d7ed414109d3501f1cb3d7a1735b25a
	https://git.kernel.org/stable/c/56de724c58c07a7ca3aac027cfd2ccb184ed9e4e
	https://git.kernel.org/stable/c/a4685366f07448420badb710ff5c12aaaadf63ad
	https://git.kernel.org/stable/c/1635e407a4a64d08a8517ac59ca14ad4fc785e75