linux-cve-announce - CVE-2025-37854: drm/amdkfd: Fix mode1 reset crash issue

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Message-ID: <2025050920-CVE-2025-37854-61b7@gregkh>
Date: Fri,  9 May 2025 08:42:32 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37854: drm/amdkfd: Fix mode1 reset crash issue

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

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

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

drm/amdkfd: Fix mode1 reset crash issue

If HW scheduler hangs and mode1 reset is used to recover GPU, KFD signal
user space to abort the processes. After process abort exit, user queues
still use the GPU to access system memory before h/w is reset while KFD
cleanup worker free system memory and free VRAM.

There is use-after-free race bug that KFD allocate and reuse the freed
system memory, and user queue write to the same system memory to corrupt
the data structure and cause driver crash.

To fix this race, KFD cleanup worker terminate user queues, then flush
reset_domain wq to wait for any GPU ongoing reset complete, and then
free outstanding BOs.

The Linux kernel CVE team has assigned CVE-2025-37854 to this issue.


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

	Fixed in 6.1.135 with commit 57c9dabda80ac167de8cd71231baae37cc2f442d
	Fixed in 6.6.88 with commit 89af6b39f028c130d4362f57042927f005423e6a
	Fixed in 6.12.24 with commit ffd37d7d44d7e0b6e769d4fe6590e327f8cc3951
	Fixed in 6.13.12 with commit 6f30a847432cae84c7428e9b684b3e3fa49b2391
	Fixed in 6.14.3 with commit 9c4bcdf4068aae3e17e31c144300be405cfa03ff
	Fixed in 6.15-rc1 with commit f0b4440cdc1807bb6ec3dce0d6de81170803569b

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-2025-37854
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/gpu/drm/amd/amdkfd/kfd_process.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/57c9dabda80ac167de8cd71231baae37cc2f442d
	https://git.kernel.org/stable/c/89af6b39f028c130d4362f57042927f005423e6a
	https://git.kernel.org/stable/c/ffd37d7d44d7e0b6e769d4fe6590e327f8cc3951
	https://git.kernel.org/stable/c/6f30a847432cae84c7428e9b684b3e3fa49b2391
	https://git.kernel.org/stable/c/9c4bcdf4068aae3e17e31c144300be405cfa03ff
	https://git.kernel.org/stable/c/f0b4440cdc1807bb6ec3dce0d6de81170803569b