{"id":"CVE-2026-90270","revision":null,"records":[{"revision":"14f5c93b46ef4c1ab7334ff25aea60e5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90270","aliases":[],"title":"arm_mpam: Disable driver unbind to avoid UAF","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Disable driver unbind to avoid UAF\n\nWhen a user unbinds an MSC and that MSC is the only MSC left for a\ncomponent then the corresponding mpam_component will be freed. If the user\nthen goes on to read the schemata file in the resctrl filesystem then the\nmpam_component will be accessed from resctrl_arch_get_config() leading to a\nuse after free.\n\nAs the MPAM driver is not a module the unbind sysfs interface is the only\nway to trigger the remove. Instead of dealing with the complexity of\nallowing some unused MSC to unbind just remove the unbind sysfs interface.","state":0,"publishedAt":"2026-09-17T16:08:04.648+00:00","modifiedAt":"2026-10-19T09:00:47.928+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/resctrl/mpam_devices.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f04046f2577a5c76167333ca99d3903ee5331ba0\",\n                            \"lessThan\": \"7d199b6a0651abad3ca6d0877dbedbe8fe6ea9e2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f04046f2577a5c76167333ca99d3903ee5331ba0\",\n                            \"lessThan\": \"bb1a0f582d519c0461b0940116e2b52c5ba31459\",\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\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/resctrl/mpam_devices.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/7d199b6a0651abad3ca6d0877dbedbe8fe6ea9e2","https://git.kernel.org/stable/c/bb1a0f582d519c0461b0940116e2b52c5ba31459"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90270","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90270","identifiers":["CVE-2026-90270"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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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-cadd7e107d6a473d8b21b34f36f0e731","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T03:16:06.8951967+00:00","lastSuccessAt":"2026-11-09T03:16:06.9762734+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:16:06.9762734+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T03:04:09.5264463+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T03:04:09.5264463+00:00","lastSuccessAt":"2026-11-09T03:04:09.6884561+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.6884561+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-5a44a451442747cb81d83104fe1e7771","complete":true,"records":13666,"lastAttemptAt":"2026-11-09T03:04:10.1662574+00:00","lastSuccessAt":"2026-11-09T02:08:52.274+00:00","error":null,"lastVerifiedAt":"2026-11-09T02:08:52.274+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"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":"2026-11-09T03:04:09.4835743+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.4835743+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":"2026-11-09T03:02:14.8618119+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:02:14.8618119+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-3b1150af6d7ada2c07356cbab4ead5224c1485027890f71c71d0742cddf0b9e8","complete":true,"records":3055,"lastAttemptAt":"2026-11-09T03:04:09.4954044+00:00","lastSuccessAt":"2026-11-09T00:02:23.4330288+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.4954044+00:00","snapshotPublishedAt":"2026-11-08T23:17:54+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-d847477990cd62b1d95e922f40ca328269fbc268a0aa72bfe5bee28e656d8ce7","complete":true,"records":231296,"lastAttemptAt":"2026-11-09T03:04:09.3500258+00:00","lastSuccessAt":"2026-11-09T03:04:07.965371+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.3500258+00:00","snapshotPublishedAt":"2026-11-09T02:33:09+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}