{"id":"CVE-2025-68193","revision":"d1099e63a1c94d169c778fc317e27dff","records":[{"revision":"d1099e63a1c94d169c778fc317e27dff","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-68193","aliases":[],"title":"drm/xe/guc: Add devm release action to safely tear down CT","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Add devm release action to safely tear down CT\n\nWhen a buffer object (BO) is allocated with the XE_BO_FLAG_GGTT_INVALIDATE\nflag, the driver initiates TLB invalidation requests via the CTB mechanism\nwhile releasing the BO. However a premature release of the CTB BO can lead\nto system crashes, as observed in:\n\nOops: Oops: 0000 [#1] SMP NOPTI\nRIP: 0010:h2g_write+0x2f3/0x7c0 [xe]\nCall Trace:\n guc_ct_send_locked+0x8b/0x670 [xe]\n xe_guc_ct_send_locked+0x19/0x60 [xe]\n send_tlb_invalidation+0xb4/0x460 [xe]\n xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe]\n ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe]\n ggtt_node_remove+0x110/0x140 [xe]\n xe_ggtt_node_remove+0x40/0xa0 [xe]\n xe_ggtt_remove_bo+0x87/0x250 [xe]\n\nIntroduce a devm-managed release action during xe_guc_ct_init() and\nxe_guc_ct_init_post_hwconfig() to ensure proper CTB disablement before\nresource deallocation, preventing the use-after-free scenario.","state":0,"publishedAt":"2025-12-16T13:43:19.702+00:00","modifiedAt":"2026-10-21T12:38:02.508+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/xe/xe_guc.c\",\n                        \"drivers/gpu/drm/xe/xe_guc_ct.c\",\n                        \"drivers/gpu/drm/xe/xe_guc_ct.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"231c4110873a5db4975512c30aa10edcc5be56e2\",\n                            \"lessThan\": \"fd4e41545d5955e6f7b4a0c4b56d21010ce8e812\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"231c4110873a5db4975512c30aa10edcc5be56e2\",\n                            \"lessThan\": \"52faa05fcd9f78af99abebe30a4b7b444744c991\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"231c4110873a5db4975512c30aa10edcc5be56e2\",\n                            \"lessThan\": \"ee4b32220a6b41e71512e8804585325e685456ba\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/xe/xe_guc.c\",\n                        \"drivers/gpu/drm/xe/xe_guc_ct.c\",\n                        \"drivers/gpu/drm/xe/xe_guc_ct.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.8\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/fd4e41545d5955e6f7b4a0c4b56d21010ce8e812","https://git.kernel.org/stable/c/52faa05fcd9f78af99abebe30a4b7b444744c991","https://git.kernel.org/stable/c/ee4b32220a6b41e71512e8804585325e685456ba"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68193","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-68193","identifiers":["CVE-2025-68193"]},"retained":false,"historicalAffected":[]}],"coverage":[]}