{"api_version":"1","generated_at":"2026-08-25T14:28:18+00:00","cve":"CVE-2026-72176","urls":{"html":"https://cve.report/CVE-2026-72176","api":"https://cve.report/api/cve/CVE-2026-72176.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72176","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72176"},"summary":{"title":"mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error\n\ndamon_sysfs_scheme_add_dirs() setup the tried_regions directory after the\nstats directory setup is completed.  When the tried_regions directory\nsetup is failed, the setup function ensures the reference for the tried\nregions directory is released.  Hence the error path should put references\non setup succeeded directory objects, starting from the stats directory. \nHowever, the error path is putting the tried_regions directory instead of\nthe stats directory.\n\nAs a direct result, the stats directory object is leaked.  Worse yet, if\nthe tried_regions directory setup failed from the initial allocation, the\nscheme->tried_regions field remains uninitialized.  The following\nkobject_put(&scheme->tried_regions->kobj) call in the error path will\ndereference the uninitialized memory.  The setup failures should not be\ncommon.  But once it happens, the consequence is quite bad.\n\nFix this issue by correctly putting the stats directory instead of the\ntried_regions directory.\n\nThe issue was discovered [1] by Sashiko.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:35","updated_at":"2026-08-17 06:18:18"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31","name":"https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919","name":"https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50","name":"https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865","name":"https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b","name":"https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72176","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72176","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 50a753171d255895e5dd41566986b48dcec06f31 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 f63d6e5ba72aeacdee4fddc902bd7616cd62b919 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 40a04601a3f66cabd6629c258a07af645a658865 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 6b6b5d7c2c957136b92c00b77b7175259f13082b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 05ea83ee88ca70f8932906d9f2617ff996f45b50 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* 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":"72176","cve":"CVE-2026-72176","epss":"0.002000000","percentile":"0.101570000","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":["mm/damon/sysfs-schemes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"50a753171d255895e5dd41566986b48dcec06f31","status":"affected","version":"5181b75f438d2e5b7f27bf48c6ea88a87c2882b7","versionType":"git"},{"lessThan":"f63d6e5ba72aeacdee4fddc902bd7616cd62b919","status":"affected","version":"5181b75f438d2e5b7f27bf48c6ea88a87c2882b7","versionType":"git"},{"lessThan":"40a04601a3f66cabd6629c258a07af645a658865","status":"affected","version":"5181b75f438d2e5b7f27bf48c6ea88a87c2882b7","versionType":"git"},{"lessThan":"6b6b5d7c2c957136b92c00b77b7175259f13082b","status":"affected","version":"5181b75f438d2e5b7f27bf48c6ea88a87c2882b7","versionType":"git"},{"lessThan":"05ea83ee88ca70f8932906d9f2617ff996f45b50","status":"affected","version":"5181b75f438d2e5b7f27bf48c6ea88a87c2882b7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["mm/damon/sysfs-schemes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","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":"6.6.145","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error\n\ndamon_sysfs_scheme_add_dirs() setup the tried_regions directory after the\nstats directory setup is completed.  When the tried_regions directory\nsetup is failed, the setup function ensures the reference for the tried\nregions directory is released.  Hence the error path should put references\non setup succeeded directory objects, starting from the stats directory. \nHowever, the error path is putting the tried_regions directory instead of\nthe stats directory.\n\nAs a direct result, the stats directory object is leaked.  Worse yet, if\nthe tried_regions directory setup failed from the initial allocation, the\nscheme->tried_regions field remains uninitialized.  The following\nkobject_put(&scheme->tried_regions->kobj) call in the error path will\ndereference the uninitialized memory.  The setup failures should not be\ncommon.  But once it happens, the consequence is quite bad.\n\nFix this issue by correctly putting the stats directory instead of the\ntried_regions directory.\n\nThe issue was discovered [1] by Sashiko."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:09:38.651Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31"},{"url":"https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919"},{"url":"https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865"},{"url":"https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b"},{"url":"https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50"}],"title":"mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72176","datePublished":"2026-08-15T05:53:40.759Z","dateReserved":"2026-08-09T03:40:39.910Z","dateUpdated":"2026-08-17T05:09:38.651Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:35","lastModifiedDate":"2026-08-17 06:18:18","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72176","Ordinal":"1","Title":"mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal","CVE":"CVE-2026-72176","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72176","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error\n\ndamon_sysfs_scheme_add_dirs() setup the tried_regions directory after the\nstats directory setup is completed.  When the tried_regions directory\nsetup is failed, the setup function ensures the reference for the tried\nregions directory is released.  Hence the error path should put references\non setup succeeded directory objects, starting from the stats directory. \nHowever, the error path is putting the tried_regions directory instead of\nthe stats directory.\n\nAs a direct result, the stats directory object is leaked.  Worse yet, if\nthe tried_regions directory setup failed from the initial allocation, the\nscheme->tried_regions field remains uninitialized.  The following\nkobject_put(&scheme->tried_regions->kobj) call in the error path will\ndereference the uninitialized memory.  The setup failures should not be\ncommon.  But once it happens, the consequence is quite bad.\n\nFix this issue by correctly putting the stats directory instead of the\ntried_regions directory.\n\nThe issue was discovered [1] by Sashiko.","Type":"Description","Title":"mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal"}]}}}