linux-cve-announce - CVE-2025-38011: drm/amdgpu: csa unmap use uninterruptible lock

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Message-ID: <2025061842-CVE-2025-38011-c17c@gregkh>
Date: Wed, 18 Jun 2025 11:28:45 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38011: drm/amdgpu: csa unmap use uninterruptible lock

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

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

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

drm/amdgpu: csa unmap use uninterruptible lock

After process exit to unmap csa and free GPU vm, if signal is accepted
and then waiting to take vm lock is interrupted and return, it causes
memory leaking and below warning backtrace.

Change to use uninterruptible wait lock fix the issue.

WARNING: CPU: 69 PID: 167800 at amd/amdgpu/amdgpu_kms.c:1525
 amdgpu_driver_postclose_kms+0x294/0x2a0 [amdgpu]
 Call Trace:
  <TASK>
  drm_file_free.part.0+0x1da/0x230 [drm]
  drm_close_helper.isra.0+0x65/0x70 [drm]
  drm_release+0x6a/0x120 [drm]
  amdgpu_drm_release+0x51/0x60 [amdgpu]
  __fput+0x9f/0x280
  ____fput+0xe/0x20
  task_work_run+0x67/0xa0
  do_exit+0x217/0x3c0
  do_group_exit+0x3b/0xb0
  get_signal+0x14a/0x8d0
  arch_do_signal_or_restart+0xde/0x100
  exit_to_user_mode_loop+0xc1/0x1a0
  exit_to_user_mode_prepare+0xf4/0x100
  syscall_exit_to_user_mode+0x17/0x40
  do_syscall_64+0x69/0xc0

(cherry picked from commit 7dbbfb3c171a6f63b01165958629c9c26abf38ab)

The Linux kernel CVE team has assigned CVE-2025-38011 to this issue.


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

	Fixed in 6.12.30 with commit 8d71c3231b33e24a911b8f2d8c3a17ee40aa32d5
	Fixed in 6.14.8 with commit a1adc8d9a0d219d4e88672c30dbc9ea960d73136
	Fixed in 6.15 with commit a0fa7873f2f869087b1e7793f7fac3713a1e3afe

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-2025-38011
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/amdgpu/amdgpu_csa.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/8d71c3231b33e24a911b8f2d8c3a17ee40aa32d5
	https://git.kernel.org/stable/c/a1adc8d9a0d219d4e88672c30dbc9ea960d73136
	https://git.kernel.org/stable/c/a0fa7873f2f869087b1e7793f7fac3713a1e3afe