CVE-2026-72176

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72176", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.910Z", "datePublished": "2026-08-15T05:53:40.759Z", "dateUpdated": "2026-08-17T05:09:38.651Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:09:38.651Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/damon/sysfs-schemes.c"], "versions": [{"version": "5181b75f438d2e5b7f27bf48c6ea88a87c2882b7", "lessThan": "50a753171d255895e5dd41566986b48dcec06f31", "status": "affected", "versionType": "git"}, {"version": "5181b75f438d2e5b7f27bf48c6ea88a87c2882b7", "lessThan": "f63d6e5ba72aeacdee4fddc902bd7616cd62b919", "status": "affected", "versionType": "git"}, {"version": "5181b75f438d2e5b7f27bf48c6ea88a87c2882b7", "lessThan": "40a04601a3f66cabd6629c258a07af645a658865", "status": "affected", "versionType": "git"}, {"version": "5181b75f438d2e5b7f27bf48c6ea88a87c2882b7", "lessThan": "6b6b5d7c2c957136b92c00b77b7175259f13082b", "status": "affected", "versionType": "git"}, {"version": "5181b75f438d2e5b7f27bf48c6ea88a87c2882b7", "lessThan": "05ea83ee88ca70f8932906d9f2617ff996f45b50", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/damon/sysfs-schemes.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.2"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-72176", "lastModified": "2026-08-17T06:18:18.120", "metrics": {}, "published": "2026-08-15T06:21:35.810", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error", "id": "2516505", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516505"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in the Linux kernel's mm/damon/sysfs-schemes component, which could lead to a denial of service or system instability. This vulnerability is caused by an incorrect error handling path in the damon_sysfs_scheme_add_dirs() function, resulting in a resource leak and the dereference of uninitialized memory."], "name": "CVE-2026-72176", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72176\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72176\nhttps://lore.kernel.org/linux-cve-announce/2026081539-CVE-2026-72176-543c@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5181b75f438d2e5b7f27bf48c6ea88a87c2882b7,50a753171d255895e5dd41566986b48dcec06f31)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5181b75f438d2e5b7f27bf48c6ea88a87c2882b7,f63d6e5ba72aeacdee4fddc902bd7616cd62b919)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5181b75f438d2e5b7f27bf48c6ea88a87c2882b7,40a04601a3f66cabd6629c258a07af645a658865)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5181b75f438d2e5b7f27bf48c6ea88a87c2882b7,6b6b5d7c2c957136b92c00b77b7175259f13082b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5181b75f438d2e5b7f27bf48c6ea88a87c2882b7,05ea83ee88ca70f8932906d9f2617ff996f45b50)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T16:00:07.583962+00:00", "updated": "2026-08-22T11:45:03.558395+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}