CVE-2026-89808

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89808", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.767Z", "datePublished": "2026-09-16T10:30:41.508Z", "dateUpdated": "2026-10-30T12:33:06.729Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:33:06.729Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram\n\nWhen migration vm range is hole at cpu side(MIGRATE_PFN_MIGRATE set +\nMIGRATE_PFN_VALID unset) driver still allocates device pages. There is no\ndma map of src pages and migration. j is 0 and svm_migrate_copy_memory_gart()\nwill return an uninitialized r. That can trigger out_free_vram_pages to drop\nall VRAM just set up.\n\nInitialize r and only call the last svm_migrate_copy_memory_gart if j > 0.\n\nCurrent code postponed the last page to the final copy. This patch flushes on\nthe last page when reach to the end of current drm_buddy_block; avoids another\nsvm_migrate_copy_memory_gart."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only via local /dev/kfd AMDKFD_IOC_SVM (SET_ATTR prefetch) or the process's own GPU page-fault SVM restore into svm_migrate_copy_to_vram; it is not reachable from network packets, adjacent wireless, or a physical bus.\nAC:L - An attacker creates anonymous VMA holes (untouched mmap or zero pages) and triggers migration with AMDKFD_IOC_SVM PREFETCH_LOC; migrate_vma records MIGRATE_PFN_MIGRATE without VALID so j stays 0 and the uninitialized-r path runs with no race, victim state, or rare config (HSA_AMD_SVM defaults y).\nPR:L - kfd_open() and AMDKFD_IOC_SVM perform no capable() checks (ioctl flag 0, unlike CRIU); /dev/kfd and the DRM render node are available to unprivileged render-group users on typical ROCm, desktop, and Android AMD GPU systems, which is Low privilege not init-namespace root.\nUI:N - Exploitation uses only the attacker's own /dev/kfd file descriptor, anonymous mappings, and SVM ioctls; no separate victim must mount a filesystem, open a file, or take any other action.\nS:U - Impact is confined to amdkfd SVM/GPUVM state and ZONE_DEVICE pages in the host kernel; it does not cross a VM, hypervisor, IOMMU device-isolation, or sandbox security authority.\nC:H - Spurious out_free_vram_pages unlocks and puts destination ZONE_DEVICE pages (page_free \u2192 svm_range_bo_unref_async) while SDMA may still copy into that VRAM and a non-zero leftover r can still mark the range GPU-resident; that device-page UAF enables kernel/VRAM disclosure.\nI:H - The same premature free of migrate destination pages, while actual_loc/vram_pages may still record a successful GPU migration, lets later HMM/GPUVM/SDMA operate on put ZONE_DEVICE pages and svm_bo refs, a kernel UAF write/control-flow primitive scored High per UAF guidance.\nA:H - Putting still-in-use ZONE_DEVICE pages and leaving SVM actual_loc/vram_pages inconsistent reliably causes kernel oops/WARN (bad page lock, folio_put on freed pages, VRAM BO validation) or GPU hang/reset, which is High availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_migrate.c"], "versions": [{"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "d5872c81c70163a3ba9eb4da9a94c92b03067576", "status": "affected", "versionType": "git"}, {"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "6e1a6f3ddb87d7f89a775c55fb399680c02bdcc2", "status": "affected", "versionType": "git"}, {"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "bd1adb2e5101db649121b59e601c92773a302a70", "status": "affected", "versionType": "git"}, {"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "ae806a95b28fcecb913430cfa45a252e91a945d6", "status": "affected", "versionType": "git"}, {"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "0a9a0e8a97da70a0336c9115178aaf1be29bcfb1", "status": "affected", "versionType": "git"}, {"version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "lessThan": "520e345ffe05aabef1db82beda4288afb1757ff2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_migrate.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.5", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d5872c81c70163a3ba9eb4da9a94c92b03067576"}, {"url": "https://git.kernel.org/stable/c/6e1a6f3ddb87d7f89a775c55fb399680c02bdcc2"}, {"url": "https://git.kernel.org/stable/c/bd1adb2e5101db649121b59e601c92773a302a70"}, {"url": "https://git.kernel.org/stable/c/ae806a95b28fcecb913430cfa45a252e91a945d6"}, {"url": "https://git.kernel.org/stable/c/0a9a0e8a97da70a0336c9115178aaf1be29bcfb1"}, {"url": "https://git.kernel.org/stable/c/520e345ffe05aabef1db82beda4288afb1757ff2"}], "title": "drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_migrate.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d5872c81c70163a3ba9eb4da9a94c92b03067576", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}, {"lessThan": "6e1a6f3ddb87d7f89a775c55fb399680c02bdcc2", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}, {"lessThan": "bd1adb2e5101db649121b59e601c92773a302a70", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}, {"lessThan": "ae806a95b28fcecb913430cfa45a252e91a945d6", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}, {"lessThan": "0a9a0e8a97da70a0336c9115178aaf1be29bcfb1", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}, {"lessThan": "520e345ffe05aabef1db82beda4288afb1757ff2", "status": "affected", "version": "50ea50cf6f6d31d3235ad1853c5dbea766a3ed11", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_migrate.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"lessThan": "5.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.51", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram\n\nWhen migration vm range is hole at cpu side(MIGRATE_PFN_MIGRATE set +\nMIGRATE_PFN_VALID unset) driver still allocates device pages. There is no\ndma map of src pages and migration. j is 0 and svm_migrate_copy_memory_gart()\nwill return an uninitialized r. That can trigger out_free_vram_pages to drop\nall VRAM just set up.\n\nInitialize r and only call the last svm_migrate_copy_memory_gart if j > 0.\n\nCurrent code postponed the last page to the final copy. This patch flushes on\nthe last page when reach to the end of current drm_buddy_block; avoids another\nsvm_migrate_copy_memory_gart."}], "id": "CVE-2026-89808", "lastModified": "2026-10-30T13:20:29.747", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-16T11:16:45.940", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a9a0e8a97da70a0336c9115178aaf1be29bcfb1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/520e345ffe05aabef1db82beda4288afb1757ff2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6e1a6f3ddb87d7f89a775c55fb399680c02bdcc2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ae806a95b28fcecb913430cfa45a252e91a945d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd1adb2e5101db649121b59e601c92773a302a70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5872c81c70163a3ba9eb4da9a94c92b03067576"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ae806a95b28fcecb913430cfa45a252e91a945d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0a9a0e8a97da70a0336c9115178aaf1be29bcfb1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,520e345ffe05aabef1db82beda4288afb1757ff2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.51)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.2.5)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-16T17:00:08.273706+00:00", "updated": "2026-09-18T10:00:06.878509+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-457"]}