{"id":"CVE-2026-53265","revision":null,"records":[{"revision":"a9b3944d7d3d4c72b9896eafdd080b92","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53265","aliases":[],"title":"dm cache policy smq: check allocation under invalidate lock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache policy smq: check allocation under invalidate lock\n\ncommit 2d1f7b65f5de (\"dm cache policy smq: fix missing locks in\ninvalidating cache blocks\") added mq->lock around the destructive part of\nsmq_invalidate_mapping(), but left the e->allocated check outside the\ncritical section.\n\nThat leaves a check-then-act race. Two concurrent invalidators can both\nobserve e->allocated as true before either of them takes mq->lock. The\nfirst invalidator that acquires the lock removes the entry from the\nqueues and hash table and then calls free_entry(), which clears\ne->allocated and puts the entry back on the free list. The second\ninvalidator can then acquire mq->lock and continue with the stale result\nof the unlocked check.\n\nThis can corrupt the SMQ queues or hash table by deleting an entry that\nis no longer on those structures. It can also hit the allocation check in\nfree_entry() when the same entry is freed again.\n\nMove the allocation check under mq->lock so the predicate and the\ndestructive operations are serialized by the same lock.","state":0,"publishedAt":"2026-06-25T08:39:52.543+00:00","modifiedAt":"2026-10-19T19:57:32.554+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/dm-cache-policy-smq.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4991b5a08751e2e82488fb93ae08849b6aea10d9\",\n                            \"lessThan\": \"c242c7af2aecf0b538b8623bdb86b8b441da38d9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b2bec4a7dcf5f00b7a1cbeeec8997841d783513\",\n                            \"lessThan\": \"13da856c86fb8c2ccab95034fd77da1bb2c2a17c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9a5fdfb9e57ec3a8ad2b8fce5e5ffa42d53b130e\",\n                            \"lessThan\": \"d886945fcb0f8c9dc6b39928d7a96c95c587346c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ac5ee99443891bdb161f5539606a66a1b5e72542\",\n                            \"lessThan\": \"b4892561552d671bd8c4da5ebb70e9fbb1ec446e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"93627a29d4b66d4a2def938dfb8610cc80ae454b\",\n                            \"lessThan\": \"03ffe1112ed88bb3a9bd0b971549bf4d64bfc59a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c348ae47d8e65f06429fa41adce9ad986b696766\",\n                            \"lessThan\": \"42ff6774ecd9d7f70d599cb71ff64373a1da4948\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2b62d0611c9af14a16bddf22df2612b4f40eb5a1\",\n                            \"lessThan\": \"c57570fba24016ec25ec046ab44db39143fb7a64\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2d1f7b65f5deedd2e6b09fdc6ea27f8375f24b45\",\n                            \"lessThan\": \"d3f0a606b9f278ece8a0df626ded9c4044071235\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/dm-cache-policy-smq.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThan\": \"5.10.259\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThan\": \"5.15.210\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThan\": \"6.1.176\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.141\",\n                            \"lessThan\": \"6.6.143\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.91\",\n                            \"lessThan\": \"6.12.94\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThan\": \"6.18.36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThan\": \"7.0.13\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/c242c7af2aecf0b538b8623bdb86b8b441da38d9","https://git.kernel.org/stable/c/13da856c86fb8c2ccab95034fd77da1bb2c2a17c","https://git.kernel.org/stable/c/d886945fcb0f8c9dc6b39928d7a96c95c587346c","https://git.kernel.org/stable/c/b4892561552d671bd8c4da5ebb70e9fbb1ec446e","https://git.kernel.org/stable/c/03ffe1112ed88bb3a9bd0b971549bf4d64bfc59a","https://git.kernel.org/stable/c/42ff6774ecd9d7f70d599cb71ff64373a1da4948","https://git.kernel.org/stable/c/c57570fba24016ec25ec046ab44db39143fb7a64","https://git.kernel.org/stable/c/d3f0a606b9f278ece8a0df626ded9c4044071235"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53265","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53265","identifiers":["CVE-2026-53265"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-08T19:47:20.1649891+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-08T19:47:20.1649891+00:00","lastSuccessAt":"2026-11-08T19:47:20.3943637+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.3943658+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-eaa64dac63caa79c8d4905619258c41c51b39e461b996124e1a21b5e85e7e738-5ed072895efd00dfc9298eaa4ea0dc8e51b29da4254bc61a9f28835ec1fa6ea6","complete":true,"records":421260,"lastAttemptAt":"2026-11-08T19:47:19.7023073+00:00","lastSuccessAt":"2026-11-08T19:47:19.6080199+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:19.7023073+00:00","snapshotPublishedAt":"2026-11-08T19:27:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f1b70ba09149408c9b3f93f80725b8b9","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T19:48:04.0257169+00:00","lastSuccessAt":"2026-11-08T19:48:04.022+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:48:04.022+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-08T19:47:20.1649891+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T19:47:20.1649891+00:00","lastSuccessAt":"2026-11-08T19:47:20.3951142+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.3951146+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-3b79c659b4ac42b2801e63ff6ff3a882","complete":false,"records":13666,"lastAttemptAt":"2026-11-08T19:47:46.1695591+00:00","lastSuccessAt":"2026-11-08T19:47:46.166+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:46.166+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13206,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-08T19:47:20.0165357+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.0165357+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-08T19:47:19.7560084+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:19.7560084+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-964c14035e6f0f6478b2870fad6a7ef9f6045876d4a12af2c2e514521e54b6af","complete":true,"records":3055,"lastAttemptAt":"2026-11-08T19:47:20.1181272+00:00","lastSuccessAt":"2026-11-08T11:07:12.1927025+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.1181272+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-f8647d7ba64b1ba0dfdc7130944766d5b36d5b77d18fff0c79e651a4cff3c2b9","complete":true,"records":231293,"lastAttemptAt":"2026-11-08T19:47:19.9161497+00:00","lastSuccessAt":"2026-11-08T11:06:56.2918717+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:19.9161497+00:00","snapshotPublishedAt":"2026-11-08T11:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}