CVE-2026-74644

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74644", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.923Z", "datePublished": "2026-08-22T15:32:21.899Z", "dateUpdated": "2026-08-23T12:47:57.298Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:47:57.298Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/ops-common: putback folios on invalid migrate nid\n\ndamon_pa_migrate() and damos_va_migrate() isolate folios into a local list\nand then call damon_migrate_pages(). When target_nid is invalid\n(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()\nreturns early without putting the folios back to the LRU.\n\nCallers then discard the list head while those folios remain isolated with\nan extra reference taken by folio_isolate_lru(). The pages stay off the\nLRU for as long as the mapping exists (anon active+inactive counts drop\nwhile RSS does not), and the leftover references can pin the pages after\nthe mapping is gone.\n\nPut the folios back on the invalid-nid path so ignored migration requests\nstill return them to the LRU."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/damon/ops-common.c"], "versions": [{"version": "7c303fa1f311aadc17fa82b7bbf776412adf45de", "lessThan": "7001c0a1bc9018cd5b2b72ebebb216d738b2ec81", "status": "affected", "versionType": "git"}, {"version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "lessThan": "460181e4bb47a57776c64f0832c2096de8878cb3", "status": "affected", "versionType": "git"}, {"version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "lessThan": "cfef454862b7d2776e0955b873dd59af6b47cfcb", "status": "affected", "versionType": "git"}, {"version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "lessThan": "5deb65c34e682e7c5f5df417a70e223e8fcc5f5a", "status": "affected", "versionType": "git"}, {"version": "9d0c2d15aff96746f99a7c97221bb8ce5b62db19", "status": "affected", "versionType": "git"}, {"version": "6.12.44", "lessThan": "6.12.105", "status": "affected", "versionType": "semver"}, {"version": "6.16.4", "lessThan": "6.17", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/damon/ops-common.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.105", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "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": "6.12.44", "versionEndExcluding": "6.12.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7001c0a1bc9018cd5b2b72ebebb216d738b2ec81"}, {"url": "https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3"}, {"url": "https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb"}, {"url": "https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a"}], "title": "mm/damon/ops-common: putback folios on invalid migrate nid", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/damon/ops-common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7001c0a1bc9018cd5b2b72ebebb216d738b2ec81", "status": "affected", "version": "7c303fa1f311aadc17fa82b7bbf776412adf45de", "versionType": "git"}, {"lessThan": "460181e4bb47a57776c64f0832c2096de8878cb3", "status": "affected", "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "versionType": "git"}, {"lessThan": "cfef454862b7d2776e0955b873dd59af6b47cfcb", "status": "affected", "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "versionType": "git"}, {"lessThan": "5deb65c34e682e7c5f5df417a70e223e8fcc5f5a", "status": "affected", "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0", "versionType": "git"}, {"status": "affected", "version": "9d0c2d15aff96746f99a7c97221bb8ce5b62db19", "versionType": "git"}, {"lessThan": "6.12.105", "status": "affected", "version": "6.12.44", "versionType": "semver"}, {"lessThan": "6.17", "status": "affected", "version": "6.16.4", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/damon/ops-common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.105", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "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/ops-common: putback folios on invalid migrate nid\n\ndamon_pa_migrate() and damos_va_migrate() isolate folios into a local list\nand then call damon_migrate_pages(). When target_nid is invalid\n(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()\nreturns early without putting the folios back to the LRU.\n\nCallers then discard the list head while those folios remain isolated with\nan extra reference taken by folio_isolate_lru(). The pages stay off the\nLRU for as long as the mapping exists (anon active+inactive counts drop\nwhile RSS does not), and the leftover references can pin the pages after\nthe mapping is gone.\n\nPut the folios back on the invalid-nid path so ignored migration requests\nstill return them to the LRU."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmm/damon/ops-common: devolver folios en nid de migraci\u00f3n inv\u00e1lido\n\ndamon_pa_migrate() y damos_va_migrate() a\u00edslan folios en una lista local y luego llaman a damon_migrate_pages(). Cuando target_nid es inv\u00e1lido (incluyendo el valor predeterminado del esquema NUMA_NO_NODE / -1), damon_migrate_pages() retorna anticipadamente sin devolver los folios a la LRU.\n\nLos llamadores luego descartan el encabezado de la lista mientras esos folios permanecen aislados con una referencia adicional tomada por folio_isolate_lru(). Las p\u00e1ginas permanecen fuera de la LRU mientras exista el mapeo (los recuentos de anon activos+inactivos disminuyen mientras que el RSS no), y las referencias restantes pueden fijar las p\u00e1ginas despu\u00e9s de que el mapeo desaparezca.\n\nDevuelve los folios en la ruta de nid inv\u00e1lido para que las solicitudes de migraci\u00f3n ignoradas a\u00fan los devuelvan a la LRU."}], "id": "CVE-2026-74644", "lastModified": "2026-10-14T13:10:00.187", "metrics": {}, "published": "2026-08-22T16:16:37.730", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7001c0a1bc9018cd5b2b72ebebb216d738b2ec81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mm/damon/ops-common: putback folios on invalid migrate nid", "id": "2521471", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521471"}, "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-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/damon/ops-common: putback folios on invalid migrate nid\ndamon_pa_migrate() and damos_va_migrate() isolate folios into a local list\nand then call damon_migrate_pages(). When target_nid is invalid\n(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()\nreturns early without putting the folios back to the LRU.\nCallers then discard the list head while those folios remain isolated with\nan extra reference taken by folio_isolate_lru(). The pages stay off the\nLRU for as long as the mapping exists (anon active+inactive counts drop\nwhile RSS does not), and the leftover references can pin the pages after\nthe mapping is gone.\nPut the folios back on the invalid-nid path so ignored migration requests\nstill return them to the LRU.", "A flaw was found in the Linux kernel's Data Access MONitor (DAMON) component. When `damon_pa_migrate()` or `damos_va_migrate()` functions attempt to migrate memory pages (folios) to an invalid Node ID (NID), these pages are not properly returned to the Least Recently Used (LRU) list. This improper handling results in the pages remaining isolated with an extra reference, which can lead to memory pinning and potential system instability or denial of service due to memory exhaustion."], "name": "CVE-2026-74644", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74644\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74644\nhttps://lore.kernel.org/linux-cve-announce/2026082224-CVE-2026-74644-d0a1@gregkh/T"], "threat_severity": "Low"}

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