{"cve":"CVE-2025-38355","nvd":{"published":"2025-07-25T13:15:24.240","modified":"2026-06-17T09:16:41.670","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Process deferred GGTT node removals on device unwind\n\nWhile we are indirectly draining our dedicated workqueue ggtt->wq\nthat we use to complete asynchronous removal of some GGTT nodes,\nthis happends as part of the managed-drm unwinding (ggtt_fini_early),\nwhich could be later then manage-device unwinding, where we could\nalready unmap our MMIO/GMS mapping (mmio_fini).\n\nThis was recently observed during unsuccessful VF initialization:\n\n [ ] xe 0000:00:02.1: probe with driver xe failed with error -62\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747340 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747540 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747240 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747040 tiles_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746840 mmio_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747f40 xe_bo_pinned_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746b40 devm_drm_dev_init_release (16 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] drmres release begin\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef81640 __fini_relay (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80d40 guc_ct_fini (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80040 __drmm_mutex_release (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80140 ggtt_fini_early (8 bytes)\n\nand this was leading to:\n\n [ ] BUG: unable to handle page fault for address: ffffc900058162a0\n [ ] #PF: supervisor write access in kernel mode\n [ ] #PF: error_code(0x0002) - not-present page\n [ ] Oops: Oops: 0002 [#1] SMP NOPTI\n [ ] Tainted: [W]=WARN\n [ ] Workqueue: xe-ggtt-wq ggtt_node_remove_work_func [xe]\n [ ] RIP: 0010:xe_ggtt_set_pte+0x6d/0x350 [xe]\n [ ] Call Trace:\n [ ]  <TASK>\n [ ]  xe_ggtt_clear+0xb0/0x270 [xe]\n [ ]  ggtt_node_remove+0xbb/0x120 [xe]\n [ ]  ggtt_node_remove_work_func+0x30/0x50 [xe]\n [ ]  process_one_work+0x22b/0x6f0\n [ ]  worker_thread+0x1e8/0x3d\n\nAdd managed-device action that will explicitly drain the workqueue\nwith all pending node removals prior to releasing MMIO/GSM mapping.\n\n(cherry picked from commit 89d2835c3680ab1938e22ad81b1c9f8c686bd391)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/1b12f8dabbb8fd7d5a2611dd7bc5982ffbc2e5df","https://git.kernel.org/stable/c/5ab4eba9b26a93605b4f2f2b688d6ba818d7331d","https://git.kernel.org/stable/c/af2b588abe006bd55ddd358c4c3b87523349c475"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:05:46.678065081+00:00"},"epss":{"cve":"CVE-2025-38355","score":0.00187,"percentile":0.08277,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}