{"api_version":"1","generated_at":"2026-08-15T09:29:14+00:00","cve":"CVE-2026-72359","urls":{"html":"https://cve.report/CVE-2026-72359","api":"https://cve.report/api/cve/CVE-2026-72359.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72359","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72359"},"summary":{"title":"drm/xe: fix NPD in bo_meminfo()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: fix NPD in bo_meminfo()\n\nWhen a buffer object is purged, its ttm.resource is set to NULL via the\nTTM pipeline gutting flow. However, the BO remains in the client's\nobject list until userspace explicitly closes the GEM handle. If memory\nstats are queried during this time, accessing bo->ttm.resource->mem_type\nwill result in a NULL pointer dereference.\n\nFix this by safely skipping purged BOs in bo_meminfo, as they no longer\nconsume any memory.\n\nUser is getting NPD on device resume, and possible theory is that in\nbo_move(), if we need to evict something to SYSTEM to save the CCS state,\nbut the BO is marked as dontneed, this won't trigger a move but will\nnuke the pages, leaving us with a NULL bo resource. And the meminfo()\ndoesn't look ready to handle a NULL resource.\n\nv2 (Sashiko):\n - There could potentially be other cases where we might end up with a\n   NULL resource, so make this a general NULL check for now.\n\n(cherry picked from commit c9a8e7daa0afe3161111e27fd92176e608c7f186)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:09","updated_at":"2026-08-15 06:22:09"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b5c55015d4164a0f206bcdcf2985da948b3c7837","name":"https://git.kernel.org/stable/c/b5c55015d4164a0f206bcdcf2985da948b3c7837","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5ff2212f0e0779b0b0cbf91fbf970144107c4257","name":"https://git.kernel.org/stable/c/5ff2212f0e0779b0b0cbf91fbf970144107c4257","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72359","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72359","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ad9843aac91a1eda12912a4922042ea04cfc29dc 5ff2212f0e0779b0b0cbf91fbf970144107c4257 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ad9843aac91a1eda12912a4922042ea04cfc29dc b5c55015d4164a0f206bcdcf2985da948b3c7837 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/xe/xe_drm_client.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5ff2212f0e0779b0b0cbf91fbf970144107c4257","status":"affected","version":"ad9843aac91a1eda12912a4922042ea04cfc29dc","versionType":"git"},{"lessThan":"b5c55015d4164a0f206bcdcf2985da948b3c7837","status":"affected","version":"ad9843aac91a1eda12912a4922042ea04cfc29dc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/xe/xe_drm_client.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.1"},{"lessThan":"7.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc2","versionStartIncluding":"7.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: fix NPD in bo_meminfo()\n\nWhen a buffer object is purged, its ttm.resource is set to NULL via the\nTTM pipeline gutting flow. However, the BO remains in the client's\nobject list until userspace explicitly closes the GEM handle. If memory\nstats are queried during this time, accessing bo->ttm.resource->mem_type\nwill result in a NULL pointer dereference.\n\nFix this by safely skipping purged BOs in bo_meminfo, as they no longer\nconsume any memory.\n\nUser is getting NPD on device resume, and possible theory is that in\nbo_move(), if we need to evict something to SYSTEM to save the CCS state,\nbut the BO is marked as dontneed, this won't trigger a move but will\nnuke the pages, leaving us with a NULL bo resource. And the meminfo()\ndoesn't look ready to handle a NULL resource.\n\nv2 (Sashiko):\n - There could potentially be other cases where we might end up with a\n   NULL resource, so make this a general NULL check for now.\n\n(cherry picked from commit c9a8e7daa0afe3161111e27fd92176e608c7f186)"}],"providerMetadata":{"dateUpdated":"2026-08-15T05:55:59.424Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5ff2212f0e0779b0b0cbf91fbf970144107c4257"},{"url":"https://git.kernel.org/stable/c/b5c55015d4164a0f206bcdcf2985da948b3c7837"}],"title":"drm/xe: fix NPD in bo_meminfo()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72359","datePublished":"2026-08-15T05:55:59.424Z","dateReserved":"2026-08-09T03:40:39.921Z","dateUpdated":"2026-08-15T05:55:59.424Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:09","lastModifiedDate":"2026-08-15 06:22:09","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72359","Ordinal":"1","Title":"drm/xe: fix NPD in bo_meminfo()","CVE":"CVE-2026-72359","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72359","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: fix NPD in bo_meminfo()\n\nWhen a buffer object is purged, its ttm.resource is set to NULL via the\nTTM pipeline gutting flow. However, the BO remains in the client's\nobject list until userspace explicitly closes the GEM handle. If memory\nstats are queried during this time, accessing bo->ttm.resource->mem_type\nwill result in a NULL pointer dereference.\n\nFix this by safely skipping purged BOs in bo_meminfo, as they no longer\nconsume any memory.\n\nUser is getting NPD on device resume, and possible theory is that in\nbo_move(), if we need to evict something to SYSTEM to save the CCS state,\nbut the BO is marked as dontneed, this won't trigger a move but will\nnuke the pages, leaving us with a NULL bo resource. And the meminfo()\ndoesn't look ready to handle a NULL resource.\n\nv2 (Sashiko):\n - There could potentially be other cases where we might end up with a\n   NULL resource, so make this a general NULL check for now.\n\n(cherry picked from commit c9a8e7daa0afe3161111e27fd92176e608c7f186)","Type":"Description","Title":"drm/xe: fix NPD in bo_meminfo()"}]}}}