CVE-2025-38355

Published Jul 25, 2025

Last updated a year ago

CVSS medium 5.5

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Process deferred GGTT node removals on device unwind While we are indirectly draining our dedicated workqueue ggtt->wq that we use to complete asynchronous removal of some GGTT nodes, this happends as part of the managed-drm unwinding (ggtt_fini_early), which could be later then manage-device unwinding, where we could already unmap our MMIO/GMS mapping (mmio_fini). This was recently observed during unsuccessful VF initialization: [ ] xe 0000:00:02.1: probe with driver xe failed with error -62 [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747340 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747540 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747240 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747040 tiles_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746840 mmio_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747f40 xe_bo_pinned_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746b40 devm_drm_dev_init_release (16 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] drmres release begin [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef81640 __fini_relay (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80d40 guc_ct_fini (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80040 __drmm_mutex_release (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80140 ggtt_fini_early (8 bytes) and this was leading to: [ ] BUG: unable to handle page fault for address: ffffc900058162a0 [ ] #PF: supervisor write access in kernel mode [ ] #PF: error_code(0x0002) - not-present page [ ] Oops: Oops: 0002 [#1] SMP NOPTI [ ] Tainted: [W]=WARN [ ] Workqueue: xe-ggtt-wq ggtt_node_remove_work_func [xe] [ ] RIP: 0010:xe_ggtt_set_pte+0x6d/0x350 [xe] [ ] Call Trace: [ ] <TASK> [ ] xe_ggtt_clear+0xb0/0x270 [xe] [ ] ggtt_node_remove+0xbb/0x120 [xe] [ ] ggtt_node_remove_work_func+0x30/0x50 [xe] [ ] process_one_work+0x22b/0x6f0 [ ] worker_thread+0x1e8/0x3d Add managed-device action that will explicitly drain the workqueue with all pending node removals prior to releasing MMIO/GSM mapping. (cherry picked from commit 89d2835c3680ab1938e22ad81b1c9f8c686bd391)
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Primary
Base score
5.5
Impact score
3.6
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity
MEDIUM

Weaknesses

nvd@nist.gov
NVD-CWE-noinfo

Social media

Hype score
Not currently trending

  1. CVE-2025-38355 In the Linux kernel, the following vulnerability has been resolved: drm/xe: Process deferred GGTT node removals on device unwind While we are indirectly draining ou… https://t.co/oNu9byxplJ

    @CVEnew

    25 Jul 2025

    231 Impressions

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Configurations

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References

Sources include official advisories and independent security research.