{"api_version":"1","generated_at":"2026-10-21T13:33:14+00:00","cve":"CVE-2026-98433","urls":{"html":"https://cve.report/CVE-2026-98433","api":"https://cve.report/api/cve/CVE-2026-98433.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98433","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98433"},"summary":{"title":"KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure\n\nIn kvmppc_svm_page_in(), if uv_page_in() fails after\nkvmppc_uvmem_get_page() has succeeded, the secure device page is never\nreleased.  kvmppc_uvmem_get_page() sets a bit in kvmppc_uvmem_bitmap,\nallocates a kvmppc_uvmem_page_pvt struct, marks the GFN as\nKVMPPC_GFN_UVMEM_PFN, and calls zone_device_page_init() which sets\nrefcount=1 and locks the page.  The subsequent goto out_finalize skips\nthe *mig.dst assignment, so migrate_vma_finalize() is a no-op for the\npage, and none of those resources are ever reclaimed.\n\nEach occurrence permanently consumes one entry from the firmware-bounded\nsecure memory pool (kvmppc_uvmem_bitmap), leaks pvt, and leaves the GFN\nmarked as secure — making it unusable for the lifetime of the VM.\n\nThe twin __kvmppc_svm_page_out() already handles the analogous uv_page_out()\nfailure correctly with unlock_page(dpage); __free_page(dpage).  Apply\nthe same pattern here: unlock_page() followed by put_page(), which\nchains through free_zone_device_folio() into kvmppc_uvmem_folio_free()\nto clear the bitmap bit, free pvt, and reset the GFN state.\n\nReachable whenever uv_page_in() returns an error (e.g. UV pool\nexhaustion) on any POWER9/10 + Ultravisor/PEF system.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 15:16:53","updated_at":"2026-10-19 10:18:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a933d7024359e2e566b07903d1294b84f90482ae","name":"https://git.kernel.org/stable/c/a933d7024359e2e566b07903d1294b84f90482ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c41088b2765af1e97e7bb05f906ae1823eca0388","name":"https://git.kernel.org/stable/c/c41088b2765af1e97e7bb05f906ae1823eca0388","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b","name":"https://git.kernel.org/stable/c/f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fcbff8008b0e08cd53b611bd0ff7e01f5b962f80","name":"https://git.kernel.org/stable/c/fcbff8008b0e08cd53b611bd0ff7e01f5b962f80","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0a416ee20bcccddf91ca5b63696a23b9d11d73aa","name":"https://git.kernel.org/stable/c/0a416ee20bcccddf91ca5b63696a23b9d11d73aa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dfb84274932737e338ff5eb27f34b4c8ecb01b50","name":"https://git.kernel.org/stable/c/dfb84274932737e338ff5eb27f34b4c8ecb01b50","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8f3b7746874b39fc20e0363c9076c7787d4765ba","name":"https://git.kernel.org/stable/c/8f3b7746874b39fc20e0363c9076c7787d4765ba","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ed2f2ff63cb7e71204096e765c6d02c3b6974b95","name":"https://git.kernel.org/stable/c/ed2f2ff63cb7e71204096e765c6d02c3b6974b95","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98433","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98433","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c ed2f2ff63cb7e71204096e765c6d02c3b6974b95 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c 8f3b7746874b39fc20e0363c9076c7787d4765ba git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c a933d7024359e2e566b07903d1294b84f90482ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c c41088b2765af1e97e7bb05f906ae1823eca0388 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c dfb84274932737e338ff5eb27f34b4c8ecb01b50 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c fcbff8008b0e08cd53b611bd0ff7e01f5b962f80 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca9f4942670c37407bb109090eaf776ce2ccc54c 0a416ee20bcccddf91ca5b63696a23b9d11d73aa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.271 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.54 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * 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":["arch/powerpc/kvm/book3s_hv_uvmem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ed2f2ff63cb7e71204096e765c6d02c3b6974b95","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"8f3b7746874b39fc20e0363c9076c7787d4765ba","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"a933d7024359e2e566b07903d1294b84f90482ae","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"c41088b2765af1e97e7bb05f906ae1823eca0388","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"dfb84274932737e338ff5eb27f34b4c8ecb01b50","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"fcbff8008b0e08cd53b611bd0ff7e01f5b962f80","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"},{"lessThan":"0a416ee20bcccddf91ca5b63696a23b9d11d73aa","status":"affected","version":"ca9f4942670c37407bb109090eaf776ce2ccc54c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/powerpc/kvm/book3s_hv_uvmem.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.5"},{"lessThan":"5.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.271","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"5.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"5.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure\n\nIn kvmppc_svm_page_in(), if uv_page_in() fails after\nkvmppc_uvmem_get_page() has succeeded, the secure device page is never\nreleased.  kvmppc_uvmem_get_page() sets a bit in kvmppc_uvmem_bitmap,\nallocates a kvmppc_uvmem_page_pvt struct, marks the GFN as\nKVMPPC_GFN_UVMEM_PFN, and calls zone_device_page_init() which sets\nrefcount=1 and locks the page.  The subsequent goto out_finalize skips\nthe *mig.dst assignment, so migrate_vma_finalize() is a no-op for the\npage, and none of those resources are ever reclaimed.\n\nEach occurrence permanently consumes one entry from the firmware-bounded\nsecure memory pool (kvmppc_uvmem_bitmap), leaks pvt, and leaves the GFN\nmarked as secure — making it unusable for the lifetime of the VM.\n\nThe twin __kvmppc_svm_page_out() already handles the analogous uv_page_out()\nfailure correctly with unlock_page(dpage); __free_page(dpage).  Apply\nthe same pattern here: unlock_page() followed by put_page(), which\nchains through free_zone_device_folio() into kvmppc_uvmem_folio_free()\nto clear the bitmap bit, free pvt, and reset the GFN state.\n\nReachable whenever uv_page_in() returns an error (e.g. UV pool\nexhaustion) on any POWER9/10 + Ultravisor/PEF system."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:19:29.371Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ed2f2ff63cb7e71204096e765c6d02c3b6974b95"},{"url":"https://git.kernel.org/stable/c/8f3b7746874b39fc20e0363c9076c7787d4765ba"},{"url":"https://git.kernel.org/stable/c/a933d7024359e2e566b07903d1294b84f90482ae"},{"url":"https://git.kernel.org/stable/c/c41088b2765af1e97e7bb05f906ae1823eca0388"},{"url":"https://git.kernel.org/stable/c/f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b"},{"url":"https://git.kernel.org/stable/c/dfb84274932737e338ff5eb27f34b4c8ecb01b50"},{"url":"https://git.kernel.org/stable/c/fcbff8008b0e08cd53b611bd0ff7e01f5b962f80"},{"url":"https://git.kernel.org/stable/c/0a416ee20bcccddf91ca5b63696a23b9d11d73aa"}],"title":"KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98433","datePublished":"2026-10-18T14:38:18.296Z","dateReserved":"2026-09-25T10:25:14.348Z","dateUpdated":"2026-10-19T09:19:29.371Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 15:16:53","lastModifiedDate":"2026-10-19 10:18:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98433","Ordinal":"1","Title":"KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in()","CVE":"CVE-2026-98433","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98433","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure\n\nIn kvmppc_svm_page_in(), if uv_page_in() fails after\nkvmppc_uvmem_get_page() has succeeded, the secure device page is never\nreleased.  kvmppc_uvmem_get_page() sets a bit in kvmppc_uvmem_bitmap,\nallocates a kvmppc_uvmem_page_pvt struct, marks the GFN as\nKVMPPC_GFN_UVMEM_PFN, and calls zone_device_page_init() which sets\nrefcount=1 and locks the page.  The subsequent goto out_finalize skips\nthe *mig.dst assignment, so migrate_vma_finalize() is a no-op for the\npage, and none of those resources are ever reclaimed.\n\nEach occurrence permanently consumes one entry from the firmware-bounded\nsecure memory pool (kvmppc_uvmem_bitmap), leaks pvt, and leaves the GFN\nmarked as secure — making it unusable for the lifetime of the VM.\n\nThe twin __kvmppc_svm_page_out() already handles the analogous uv_page_out()\nfailure correctly with unlock_page(dpage); __free_page(dpage).  Apply\nthe same pattern here: unlock_page() followed by put_page(), which\nchains through free_zone_device_folio() into kvmppc_uvmem_folio_free()\nto clear the bitmap bit, free pvt, and reset the GFN state.\n\nReachable whenever uv_page_in() returns an error (e.g. UV pool\nexhaustion) on any POWER9/10 + Ultravisor/PEF system.","Type":"Description","Title":"KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in()"}]}}}