{"id":"CVE-2026-80543","revision":null,"records":[{"revision":"370c0f75142f40e1ab41451caeeb3d8a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80543","aliases":[],"title":"s390/zcrypt: Pad trailing CCA or EP11 message with zeros","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/zcrypt: Pad trailing CCA or EP11 message with zeros\n\nThe both functions xcrb_msg_to_type6cprb_msgx() and\nxcrb_msg_to_type6_ep11cprb_msgx() copy the user space message into a\nkernel buffer based on the message length. But on further processing\nthe message is supposed to be 4 byte length adjusted. Thus up to 3\nbytes of uninitialized kernel memory are forwarded to further\nprocessing steps and may unwanted expose kernel memory to the crypto\ncard firmware.\n\nThis patch contains code to pad the gap between user space copied\nmessage and message buffer length sent down to further processing of\nthe CCA or EP11 message to zeros.","state":0,"publishedAt":"2026-08-26T14:37:15.765+00:00","modifiedAt":"2026-10-21T12:46:26.051+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/s390/crypto/zcrypt_msgtype6.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"20b0b0159390fa5c00a435195649680fefda81e0\",\n                            \"lessThan\": \"44e61f1834831f873af5a4fec5a5e432b929c6a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e2c6d91eb8b1533753755f07803e47eceed263d0\",\n                            \"lessThan\": \"2db92a56b000173d332b6c30f38a5a4444e4355a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e2c6d91eb8b1533753755f07803e47eceed263d0\",\n                            \"lessThan\": \"eb363254472493e3458156fc11fd56dca92f4333\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f9da85d4780515f65983e0af151458599adaef3d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThan\": \"6.13\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/s390/crypto/zcrypt_msgtype6.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.10\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/44e61f1834831f873af5a4fec5a5e432b929c6a2","https://git.kernel.org/stable/c/2db92a56b000173d332b6c30f38a5a4444e4355a","https://git.kernel.org/stable/c/eb363254472493e3458156fc11fd56dca92f4333"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80543","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80543","identifiers":["CVE-2026-80543"]},"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":"2026-11-08T10:04:32.7352320+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. 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