drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create()
In the Linux kernel, the following vulnerability has been resolved: drm/xe/vm: Fix SVM leak on resv obj alloc failure in xe_vm_create() Commit 9e9787414882 ("drm/xe/userptr: replace xe_hmm with gpusvm") made xe_svm_init() unconditional in xe_vm_create() and extended it to also initialize a "simple" gpusvm state for non-fault-mode VMs. The matching xe_svm_fini() call in xe_vm_close_and_put() was updated to run unconditionally, but the error unwind path in xe_vm_create() was not. On the drm_gpuvm_resv_object_alloc() failure path, xe_svm_init() has already succeeded but xe_svm_fini() is only called when XE_VM_FLAG_FAULT_MODE is set. For non-fault-mode VMs this leaves vm->svm.gpusvm partially initialized and leaks the resources allocated by drm_gpusvm_init(). For fault-mode VMs, xe_svm_init() additionally acquires the pagemap owner via drm_pagemap_acquire_owner() and the pagemaps via xe_svm_get_pagemaps(). Those resources are released by xe_svm_close(), not xe_svm_fini(). On the same error path, xe_svm_close() is not called either, so fault-mode VMs leak the pagemap owner and pagemaps. Fix both leaks: - Call xe_svm_fini() unconditionally on the err_svm_fini path, matching the unconditional xe_svm_init() call. Move the vm->size = 0 assignment out of the conditional so the xe_vm_is_closed() assert in xe_svm_fini() (and xe_svm_close()) holds for both modes. - Call xe_svm_close() for fault-mode VMs before xe_svm_fini(), matching the ordering used in xe_vm_close_and_put(). (cherry pic
CVE-2026-68298
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68298
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "9e978741488261e117bb50e5dfcf8e4080990958",
"lessThan": "279339aa8bdcf9db40094cf2bcbd495c53dbe817",
"versionType": "git"
},
{
"status": "affected",
"version": "9e978741488261e117bb50e5dfcf8e4080990958",
"lessThan": "9ac92736030f3395d970c300eaeb59ac258a0c3e",
"versionType": "git"
},
{
"status": "affected",
"version": "9e978741488261e117bb50e5dfcf8e4080990958",
"lessThan": "d2c6800ad1802bed72a6de1416536737f114f1d6",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/xe/xe_vm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/xe/xe_vm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68298
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41690 · Revision 1
- Added to Heist Feed
- Publisher date