{"id":"CVE-2026-68298","revision":"54da68f052d44ce6863110bc2cb9dd97","records":[{"revision":"54da68f052d44ce6863110bc2cb9dd97","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68298","aliases":[],"title":"drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create()\n\nCommit 9e9787414882 (\"drm/xe/userptr: replace xe_hmm with gpusvm\") made\nxe_svm_init() unconditional in xe_vm_create() and extended it to also\ninitialize a \"simple\" gpusvm state for non-fault-mode VMs. The matching\nxe_svm_fini() call in xe_vm_close_and_put() was updated to run\nunconditionally, but the error unwind path in xe_vm_create() was not.\n\nOn the drm_gpuvm_resv_object_alloc() failure path, xe_svm_init() has\nalready succeeded but xe_svm_fini() is only called when\nXE_VM_FLAG_FAULT_MODE is set. For non-fault-mode VMs this leaves\nvm->svm.gpusvm partially initialized and leaks the resources allocated\nby drm_gpusvm_init().\n\nFor fault-mode VMs, xe_svm_init() additionally acquires the pagemap\nowner via drm_pagemap_acquire_owner() and the pagemaps via\nxe_svm_get_pagemaps(). Those resources are released by xe_svm_close(),\nnot xe_svm_fini(). On the same error path, xe_svm_close() is not\ncalled either, so fault-mode VMs leak the pagemap owner and pagemaps.\n\nFix both leaks:\n\n- Call xe_svm_fini() unconditionally on the err_svm_fini path, matching\n  the unconditional xe_svm_init() call. Move the vm->size = 0\n  assignment out of the conditional so the xe_vm_is_closed() assert in\n  xe_svm_fini() (and xe_svm_close()) holds for both modes.\n\n- Call xe_svm_close() for fault-mode VMs before xe_svm_fini(), matching\n  the ordering used in xe_vm_close_and_put().\n\n(cherry picked from commit ca2a3587d577ba764e0fe628fb676244fc33ddd4)","state":0,"publishedAt":"2026-08-10T12:02:32.194+00:00","modifiedAt":"2026-10-19T21:09:03.9+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_vm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9e978741488261e117bb50e5dfcf8e4080990958\",\n                            \"lessThan\": \"279339aa8bdcf9db40094cf2bcbd495c53dbe817\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9e978741488261e117bb50e5dfcf8e4080990958\",\n                            \"lessThan\": \"9ac92736030f3395d970c300eaeb59ac258a0c3e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9e978741488261e117bb50e5dfcf8e4080990958\",\n                            \"lessThan\": \"d2c6800ad1802bed72a6de1416536737f114f1d6\",\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_vm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/279339aa8bdcf9db40094cf2bcbd495c53dbe817","https://git.kernel.org/stable/c/9ac92736030f3395d970c300eaeb59ac258a0c3e","https://git.kernel.org/stable/c/d2c6800ad1802bed72a6de1416536737f114f1d6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68298","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68298","identifiers":["CVE-2026-68298"]},"retained":false,"historicalAffected":[]}],"coverage":[]}