{"id":"CVE-2026-93148","revision":null,"records":[{"revision":"339b220426974ae5ba312f1bcb6c6b18","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93148","aliases":[],"title":"bpf: Reject MEM_ALLOC BTF accesses past object bounds","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject MEM_ALLOC BTF accesses past object bounds\n\nBTF struct walks relax the struct-size check for accesses through a\ntrailing flexible array. That is valid for ordinary BTF type walking, but\nPTR_TO_BTF_ID | MEM_ALLOC values point to objects allocated with the static\nBTF type size.\n\nWhen walking a MEM_ALLOC object, reject the access before applying the\nflexible-array relaxation if the access range extends past the struct size.\nApply the same policy to struct ID matching so kfunc and kptr type checks\ndo not walk past the allocated object bounds either.","state":0,"publishedAt":"2026-09-17T16:11:45.457+00:00","modifiedAt":"2026-10-21T12:52:04.267+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                        \"include/linux/bpf.h\",\n                        \"kernel/bpf/btf.c\",\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"958cf2e273f0929c66169e0788031310e8118722\",\n                            \"lessThan\": \"94033c193bc38794511b2ebfa3dc0287d3b2bf60\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"958cf2e273f0929c66169e0788031310e8118722\",\n                            \"lessThan\": \"90d36e825da4fadeede64784ceda975ab7b31dab\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"958cf2e273f0929c66169e0788031310e8118722\",\n                            \"lessThan\": \"cf08ff2255de98cfcbc8bf7236fbeb38f0d5b4f1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"958cf2e273f0929c66169e0788031310e8118722\",\n                            \"lessThan\": \"e626a50d07d43421cbf7bfb5a084b33a5e276b6e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"958cf2e273f0929c66169e0788031310e8118722\",\n                            \"lessThan\": \"9c9ee0324c774490ae953162aaaf4561d222bd93\",\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                        \"include/linux/bpf.h\",\n                        \"kernel/bpf/btf.c\",\n                        \"kernel/bpf/verifier.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\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":[{"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/94033c193bc38794511b2ebfa3dc0287d3b2bf60","https://git.kernel.org/stable/c/90d36e825da4fadeede64784ceda975ab7b31dab","https://git.kernel.org/stable/c/cf08ff2255de98cfcbc8bf7236fbeb38f0d5b4f1","https://git.kernel.org/stable/c/e626a50d07d43421cbf7bfb5a084b33a5e276b6e","https://git.kernel.org/stable/c/9c9ee0324c774490ae953162aaaf4561d222bd93"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93148","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93148","identifiers":["CVE-2026-93148"]},"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-ce0df89a405747cda5b7c61ae0b48fb2","complete":true,"records":13633,"lastAttemptAt":"2026-11-08T10:04:58.8018093+00:00","lastSuccessAt":"2026-11-08T05:08:40.263+00:00","error":null,"lastVerifiedAt":"2026-11-08T05:08:40.263+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"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":"2026-11-08T10:04:32.7352320+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T10:04:32.735232+00:00","lastSuccessAt":"2026-11-08T10:04:32.958305+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:32.9583056+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-2ca35de6f6b748bea5c32f6d843eca15","complete":true,"records":13645,"lastAttemptAt":"2026-11-08T10:04:58.1666994+00:00","lastSuccessAt":"2026-11-08T10:04:58.163+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:58.163+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"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-0eb4d6dde62dffacd040ad992d4fd5a65cd7d0dc5f5f4cfa8b41967fc6f9ca5f","complete":true,"records":9914,"lastAttemptAt":"2026-11-08T10:04:32.5160062+00:00","lastSuccessAt":"2026-11-06T20:10:36.6450506+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:32.5160062+00:00","snapshotPublishedAt":"2026-11-06T20:02:57+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":"2026-11-08T10:04:32.3168711+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:32.3168711+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-335633e78a15c9cde10a6025895b5617717087fb945489ae7e15d377bacf34a9","complete":true,"records":3055,"lastAttemptAt":"2026-11-08T10:04:32.6972338+00:00","lastSuccessAt":"2026-11-06T16:03:00.7615789+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:32.6972338+00:00","snapshotPublishedAt":"2026-11-06T16:02:48+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-8efbf882841c7fda0cba0c3b55677f4781f461b96ab83577ad2701c4eaf88b1e","complete":true,"records":231293,"lastAttemptAt":"2026-11-08T10:04:32.4139557+00:00","lastSuccessAt":"2026-11-08T08:01:14.837451+00:00","error":null,"lastVerifiedAt":"2026-11-08T10:04:32.4139557+00:00","snapshotPublishedAt":"2026-11-08T07:33:16+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}