248 lines
12 KiB
JSON
248 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98433",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.348Z",
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"datePublished": "2026-10-18T14:38:18.296Z",
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"dateUpdated": "2026-10-19T09:19:29.371Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:19:29.371Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/powerpc/kvm/book3s_hv_uvmem.c"
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],
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"versions": [
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "ed2f2ff63cb7e71204096e765c6d02c3b6974b95",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "8f3b7746874b39fc20e0363c9076c7787d4765ba",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "a933d7024359e2e566b07903d1294b84f90482ae",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "c41088b2765af1e97e7bb05f906ae1823eca0388",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "dfb84274932737e338ff5eb27f34b4c8ecb01b50",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "fcbff8008b0e08cd53b611bd0ff7e01f5b962f80",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca9f4942670c37407bb109090eaf776ce2ccc54c",
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"lessThan": "0a416ee20bcccddf91ca5b63696a23b9d11d73aa",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/powerpc/kvm/book3s_hv_uvmem.c"
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],
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"versions": [
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{
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"version": "5.5",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.5",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.271",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.158",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.112",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.54",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.8",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "5.10.271"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "5.15.222"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.1.189"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.6.158"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.12.112"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.18.54"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "7.2.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ed2f2ff63cb7e71204096e765c6d02c3b6974b95"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f3b7746874b39fc20e0363c9076c7787d4765ba"
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},
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{
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"url": "https://git.kernel.org/stable/c/a933d7024359e2e566b07903d1294b84f90482ae"
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},
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{
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"url": "https://git.kernel.org/stable/c/c41088b2765af1e97e7bb05f906ae1823eca0388"
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},
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{
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"url": "https://git.kernel.org/stable/c/f3d4b2fc30c97cf8e6f8b880d2de9c17ecac7f5b"
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},
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{
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"url": "https://git.kernel.org/stable/c/dfb84274932737e338ff5eb27f34b4c8ecb01b50"
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},
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{
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"url": "https://git.kernel.org/stable/c/fcbff8008b0e08cd53b611bd0ff7e01f5b962f80"
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},
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{
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"url": "https://git.kernel.org/stable/c/0a416ee20bcccddf91ca5b63696a23b9d11d73aa"
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}
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],
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"title": "KVM: PPC: Book3S HV: fix secure device page leak on uv_page_in() failure",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |