{"id":"CVE-2026-89458","revision":"d901bde6ab16408cbd2c2de6c511dc80","records":[{"revision":"d901bde6ab16408cbd2c2de6c511dc80","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89458","aliases":[],"title":"s390/dasd: Do not complete a failed ESE read as successful","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Do not complete a failed ESE read as successful\n\ndasd_int_handler() completes an NRF read of an unallocated ESE track by\ncalling ese_read() and unconditionally marking the request\nDASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has\nzeroed the destination buffer: a failed sense-data parse or a current\ntrack outside the requested range both return early, leaving the\ndestination pages untouched. The request is still completed successfully,\nso the block layer is handed stale / uninitialized memory instead of\nzeros.\n\nCheck the ese_read() return value and fail the request through the normal\nerror path instead of forcing DASD_CQR_SUCCESS.","state":0,"publishedAt":"2026-09-11T19:43:21.346+00:00","modifiedAt":"2026-10-19T08:47:07.708+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/block/dasd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"8cb96cffceead3cbd0541154d7ecc5e6474edda1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"77168af195d04b34c6de62b874624e74d64cef8d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"921ff697bb6f7067059793becf8b2d00de71ce41\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"55f4df40178cdfede0d7ae848fbab00efa9b95c1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"c9adf8399732306dfc97b3adb4778038743e3f5e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"52b331c99baac653ca794bd8487c8ec4de8db203\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6bdd37c5526ef01326df5dabb93011ee89237e\",\n                            \"lessThan\": \"cddb447c62466f3076938ce120028d7b591f9f37\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5f7c9989f11305aaa43e0f4378f4f070022a9f2b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.4.26\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.5.10\",\n                            \"lessThan\": \"5.6\",\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/block/dasd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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/8cb96cffceead3cbd0541154d7ecc5e6474edda1","https://git.kernel.org/stable/c/77168af195d04b34c6de62b874624e74d64cef8d","https://git.kernel.org/stable/c/921ff697bb6f7067059793becf8b2d00de71ce41","https://git.kernel.org/stable/c/55f4df40178cdfede0d7ae848fbab00efa9b95c1","https://git.kernel.org/stable/c/c9adf8399732306dfc97b3adb4778038743e3f5e","https://git.kernel.org/stable/c/52b331c99baac653ca794bd8487c8ec4de8db203","https://git.kernel.org/stable/c/b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f","https://git.kernel.org/stable/c/cddb447c62466f3076938ce120028d7b591f9f37"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89458","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89458","identifiers":["CVE-2026-89458"]},"retained":false,"historicalAffected":[]}],"coverage":[]}