{"api_version":"1","generated_at":"2026-10-26T07:01:13+00:00","cve":"CVE-2026-90391","urls":{"html":"https://cve.report/CVE-2026-90391","api":"https://cve.report/api/cve/CVE-2026-90391.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90391","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90391"},"summary":{"title":"lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlib/test_hmm: fail dmirror_fault() when the mirrored mm is gone\n\ndmirror_fault() is called from the dmirror_read() and dmirror_write()\nretry loops after dmirror_do_read() or dmirror_do_write() finds a missing\ndevice page table entry.\n\nIf the mirrored mm has already exited, mmget_not_zero() fails.  The\ncurrent code returns 0 in that case, which tells the caller that faulting\nsucceeded even though no page was faulted and no device page table entry\nwas installed.  The caller then retries the same address, hits -ENOENT\nagain, and can loop forever without making progress.\n\nReturn -EFAULT instead, so the ioctl fails when the mirrored mm is no\nlonger faultable.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:38","updated_at":"2026-10-19 09:19:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/50606ced303782f8715e2d0b98ca374ea498fa29","name":"https://git.kernel.org/stable/c/50606ced303782f8715e2d0b98ca374ea498fa29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d8e64ffab01e032ae29159d27230ace8cf8bdc80","name":"https://git.kernel.org/stable/c/d8e64ffab01e032ae29159d27230ace8cf8bdc80","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/541a67f21ab807c8dbc0ea88d5a2eb73b2618090","name":"https://git.kernel.org/stable/c/541a67f21ab807c8dbc0ea88d5a2eb73b2618090","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2636569ea7c19d9a40db4a1e8d0a027bdacf1569","name":"https://git.kernel.org/stable/c/2636569ea7c19d9a40db4a1e8d0a027bdacf1569","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/701347e31aa607f3782403151a3125729d685275","name":"https://git.kernel.org/stable/c/701347e31aa607f3782403151a3125729d685275","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655","name":"https://git.kernel.org/stable/c/af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6a8024511ddf4877435c34fb3d6028aa8e590649","name":"https://git.kernel.org/stable/c/6a8024511ddf4877435c34fb3d6028aa8e590649","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a2074f86fc9653831e4fb7b711bb715db330f182","name":"https://git.kernel.org/stable/c/a2074f86fc9653831e4fb7b711bb715db330f182","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90391","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90391","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2ef9f5a5cb37643ca5def3516c546457074b882 50606ced303782f8715e2d0b98ca374ea498fa29 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2ef9f5a5cb37643ca5def3516c546457074b882 541a67f21ab807c8dbc0ea88d5a2eb73b2618090 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2ef9f5a5cb37643ca5def3516c546457074b882 d8e64ffab01e032ae29159d27230ace8cf8bdc80 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2ef9f5a5cb37643ca5def3516c546457074b882 2636569ea7c19d9a40db4a1e8d0a027bdacf1569 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 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":["lib/test_hmm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"50606ced303782f8715e2d0b98ca374ea498fa29","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"541a67f21ab807c8dbc0ea88d5a2eb73b2618090","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"d8e64ffab01e032ae29159d27230ace8cf8bdc80","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"2636569ea7c19d9a40db4a1e8d0a027bdacf1569","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"701347e31aa607f3782403151a3125729d685275","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"a2074f86fc9653831e4fb7b711bb715db330f182","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"},{"lessThan":"6a8024511ddf4877435c34fb3d6028aa8e590649","status":"affected","version":"b2ef9f5a5cb37643ca5def3516c546457074b882","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["lib/test_hmm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.8"},{"lessThan":"5.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","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":"5.10.270","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"5.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nlib/test_hmm: fail dmirror_fault() when the mirrored mm is gone\n\ndmirror_fault() is called from the dmirror_read() and dmirror_write()\nretry loops after dmirror_do_read() or dmirror_do_write() finds a missing\ndevice page table entry.\n\nIf the mirrored mm has already exited, mmget_not_zero() fails.  The\ncurrent code returns 0 in that case, which tells the caller that faulting\nsucceeded even though no page was faulted and no device page table entry\nwas installed.  The caller then retries the same address, hits -ENOENT\nagain, and can loop forever without making progress.\n\nReturn -EFAULT instead, so the ioctl fails when the mirrored mm is no\nlonger faultable."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:02:55.602Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/50606ced303782f8715e2d0b98ca374ea498fa29"},{"url":"https://git.kernel.org/stable/c/541a67f21ab807c8dbc0ea88d5a2eb73b2618090"},{"url":"https://git.kernel.org/stable/c/d8e64ffab01e032ae29159d27230ace8cf8bdc80"},{"url":"https://git.kernel.org/stable/c/2636569ea7c19d9a40db4a1e8d0a027bdacf1569"},{"url":"https://git.kernel.org/stable/c/701347e31aa607f3782403151a3125729d685275"},{"url":"https://git.kernel.org/stable/c/af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655"},{"url":"https://git.kernel.org/stable/c/a2074f86fc9653831e4fb7b711bb715db330f182"},{"url":"https://git.kernel.org/stable/c/6a8024511ddf4877435c34fb3d6028aa8e590649"}],"title":"lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90391","datePublished":"2026-09-17T16:09:25.083Z","dateReserved":"2026-09-11T19:38:34.810Z","dateUpdated":"2026-10-19T09:02:55.602Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:38","lastModifiedDate":"2026-10-19 09:19:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90391","Ordinal":"1","Title":"lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone","CVE":"CVE-2026-90391","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90391","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nlib/test_hmm: fail dmirror_fault() when the mirrored mm is gone\n\ndmirror_fault() is called from the dmirror_read() and dmirror_write()\nretry loops after dmirror_do_read() or dmirror_do_write() finds a missing\ndevice page table entry.\n\nIf the mirrored mm has already exited, mmget_not_zero() fails.  The\ncurrent code returns 0 in that case, which tells the caller that faulting\nsucceeded even though no page was faulted and no device page table entry\nwas installed.  The caller then retries the same address, hits -ENOENT\nagain, and can loop forever without making progress.\n\nReturn -EFAULT instead, so the ioctl fails when the mirrored mm is no\nlonger faultable.","Type":"Description","Title":"lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone"}]}}}