{"id":"CVE-2026-90333","revision":"2437fa7fda0144d7afad6810ad560c10","records":[{"revision":"2437fa7fda0144d7afad6810ad560c10","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90333","aliases":[],"title":"dm-integrity: replace forgeable discard filler with a keyed sector marker","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: replace forgeable discard filler with a keyed sector marker\n\nThe discard-block check in dm_integrity_rw_tag() treats a stored tag\nof all 0xf6 bytes (DISCARD_FILLER) as proof a block was discarded and\nskips HMAC verification. allow_discards is only accepted in\ndm-integrity's standalone mode. An attacker with raw write access to\nthe backing device, but without the integrity key, can stamp any block\nwith an all-0xf6 tag and have it served as authentic.\n\nAdd a new \"allow_discards_keyed\" target argument that marks discarded\nblocks with a keyed checksum of (salt || sector) instead, computed by\nintegrity_discard_checksum().","state":0,"publishedAt":"2026-09-17T16:08:46.805+00:00","modifiedAt":"2026-10-21T12:51:03.593+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                        \"Documentation/admin-guide/device-mapper/dm-ima.rst\",\n                        \"Documentation/admin-guide/device-mapper/dm-integrity.rst\",\n                        \"drivers/md/dm-integrity.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"84597a44a9d86ac949900441cea7da0af0f2f473\",\n                            \"lessThan\": \"388c3f6496bb8083576d989e6d249ba9807c6b0b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84597a44a9d86ac949900441cea7da0af0f2f473\",\n                            \"lessThan\": \"5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84597a44a9d86ac949900441cea7da0af0f2f473\",\n                            \"lessThan\": \"6228722c27304e4682cddc1fede03898f87e4414\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"84597a44a9d86ac949900441cea7da0af0f2f473\",\n                            \"lessThan\": \"68c5c42567bc462139128968ebbfadd0aefff519\",\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                        \"Documentation/admin-guide/device-mapper/dm-ima.rst\",\n                        \"Documentation/admin-guide/device-mapper/dm-integrity.rst\",\n                        \"drivers/md/dm-integrity.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.7\",\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\": \"6.18.52\",\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":[],"references":["https://git.kernel.org/stable/c/388c3f6496bb8083576d989e6d249ba9807c6b0b","https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775","https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414","https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90333","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90333","identifiers":["CVE-2026-90333"]},"retained":false,"historicalAffected":[]}],"coverage":[]}