{"api_version":"1","generated_at":"2026-08-22T08:37:10+00:00","cve":"CVE-2026-72173","urls":{"html":"https://cve.report/CVE-2026-72173","api":"https://cve.report/api/cve/CVE-2026-72173.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72173","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72173"},"summary":{"title":"fs/proc/task_mmu: do not warn on seeing non-migration pmd entry","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc/task_mmu: do not warn on seeing non-migration pmd entry\n\nPatch series \"mm/hmm: A fix and a selftest\", v3.\n\nPatch 1 fixes a stale warning present from the time when only migration\nsoftleaf entries were supported at the PMD level.\n\nPatch 2 adds some code into hmm-tests.c which exercises the pagemap path\nfor PMD device-private entries.\n\n\nThis patch (of 2):\n\npagemap_pmd_range_thp() warns if a non-present PMD is not a migration\nentry.  This became false once device-private entries at the PMD level\nwere added.\n\nTherefore, remove the stale migration-only assertion.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:35","updated_at":"2026-08-17 06:18:17"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/319caaca072adc564ac9c5357ed013909f23d5ab","name":"https://git.kernel.org/stable/c/319caaca072adc564ac9c5357ed013909f23d5ab","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0","name":"https://git.kernel.org/stable/c/cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72173","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72173","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c 319caaca072adc564ac9c5357ed013909f23d5ab git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a30b48bf1b244f11bf9b6d20cdccfe0c2264130c cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 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 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72173","cve":"CVE-2026-72173","epss":"0.001890000","percentile":"0.088830000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"319caaca072adc564ac9c5357ed013909f23d5ab","status":"affected","version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","versionType":"git"},{"lessThan":"cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0","status":"affected","version":"a30b48bf1b244f11bf9b6d20cdccfe0c2264130c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc/task_mmu: do not warn on seeing non-migration pmd entry\n\nPatch series \"mm/hmm: A fix and a selftest\", v3.\n\nPatch 1 fixes a stale warning present from the time when only migration\nsoftleaf entries were supported at the PMD level.\n\nPatch 2 adds some code into hmm-tests.c which exercises the pagemap path\nfor PMD device-private entries.\n\n\nThis patch (of 2):\n\npagemap_pmd_range_thp() warns if a non-present PMD is not a migration\nentry.  This became false once device-private entries at the PMD level\nwere added.\n\nTherefore, remove the stale migration-only assertion."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:09:35.315Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/319caaca072adc564ac9c5357ed013909f23d5ab"},{"url":"https://git.kernel.org/stable/c/cd1fc0e3c1f67c0c31dfc215e5d9b771133dedc0"}],"title":"fs/proc/task_mmu: do not warn on seeing non-migration pmd entry","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72173","datePublished":"2026-08-15T05:53:38.543Z","dateReserved":"2026-08-09T03:40:39.910Z","dateUpdated":"2026-08-17T05:09:35.315Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:35","lastModifiedDate":"2026-08-17 06:18:17","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72173","Ordinal":"1","Title":"fs/proc/task_mmu: do not warn on seeing non-migration pmd entry","CVE":"CVE-2026-72173","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72173","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc/task_mmu: do not warn on seeing non-migration pmd entry\n\nPatch series \"mm/hmm: A fix and a selftest\", v3.\n\nPatch 1 fixes a stale warning present from the time when only migration\nsoftleaf entries were supported at the PMD level.\n\nPatch 2 adds some code into hmm-tests.c which exercises the pagemap path\nfor PMD device-private entries.\n\n\nThis patch (of 2):\n\npagemap_pmd_range_thp() warns if a non-present PMD is not a migration\nentry.  This became false once device-private entries at the PMD level\nwere added.\n\nTherefore, remove the stale migration-only assertion.","Type":"Description","Title":"fs/proc/task_mmu: do not warn on seeing non-migration pmd entry"}]}}}