{"id":"CVE-2026-64018","revision":null,"records":[{"revision":"d7d75abe888f4fb9a6f600852dd53f46","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64018","aliases":[],"title":"net: mana: validate rx_req_idx to prevent out-of-bounds array access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: validate rx_req_idx to prevent out-of-bounds array access\n\nIn mana_hwc_rx_event_handler(), rx_req_idx is derived from\nsge->address in DMA-coherent memory. In Confidential VMs\n(SEV-SNP/TDX), this memory is shared unencrypted and HW can modify\nWQE contents at any time. No bounds check exists on rx_req_idx,\nwhich can lead to an out-of-bounds access into reqs[].\n\nAdd bounds check on rx_req_idx in mana_hwc_rx_event_handler() before\nusing it to index the reqs[] array.","state":0,"publishedAt":"2026-07-19T15:39:12.704+00:00","modifiedAt":"2026-10-19T20:28:08.648+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/net/ethernet/microsoft/mana/hw_channel.c\"\n ],\n \"versions\": [\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"5ddc715324badd7f2641bc177db1d027b402adae\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"ff1d5af207bcea857d45fe81505f1bc4b29eaef0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"763a372d344fb12fae566d36ddb46e92454ad58c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"fa627a5eaa83fc0261f44ef3769693b886ca6e27\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"355e9f2b2a7887ca38100127989af3e422ba71d0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f\",\n \"lessThan\": \"b809d0409991b75a6cff846a5ac27c3062953f84\",\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/net/ethernet/microsoft/mana/hw_channel.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.13\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.13\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.209\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.142\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.92\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.34\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.11\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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:N/UI:N/S:C/C:H/I:H/A:H","score":9.3,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae","https://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0","https://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01","https://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c","https://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27","https://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0","https://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64018","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64018","identifiers":["CVE-2026-64018"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-08T18:47:41.4173610+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T18:47:41.417361+00:00","lastSuccessAt":"2026-11-08T18:47:41.7296264+00:00","error":null,"lastVerifiedAt":"2026-11-08T18:47:41.7296273+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. 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