CVE-2026-90333

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90333", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.803Z", "datePublished": "2026-09-17T16:08:46.805Z", "dateUpdated": "2026-10-21T12:51:03.593Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:51:03.593Z"}, "descriptions": [{"lang": "en", "value": "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()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["Documentation/admin-guide/device-mapper/dm-ima.rst", "Documentation/admin-guide/device-mapper/dm-integrity.rst", "drivers/md/dm-integrity.c"], "versions": [{"version": "84597a44a9d86ac949900441cea7da0af0f2f473", "lessThan": "388c3f6496bb8083576d989e6d249ba9807c6b0b", "status": "affected", "versionType": "git"}, {"version": "84597a44a9d86ac949900441cea7da0af0f2f473", "lessThan": "5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775", "status": "affected", "versionType": "git"}, {"version": "84597a44a9d86ac949900441cea7da0af0f2f473", "lessThan": "6228722c27304e4682cddc1fede03898f87e4414", "status": "affected", "versionType": "git"}, {"version": "84597a44a9d86ac949900441cea7da0af0f2f473", "lessThan": "68c5c42567bc462139128968ebbfadd0aefff519", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["Documentation/admin-guide/device-mapper/dm-ima.rst", "Documentation/admin-guide/device-mapper/dm-integrity.rst", "drivers/md/dm-integrity.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/388c3f6496bb8083576d989e6d249ba9807c6b0b"}, {"url": "https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775"}, {"url": "https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414"}, {"url": "https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519"}], "title": "dm-integrity: replace forgeable discard filler with a keyed sector marker", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["Documentation/admin-guide/device-mapper/dm-ima.rst", "Documentation/admin-guide/device-mapper/dm-integrity.rst", "drivers/md/dm-integrity.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "388c3f6496bb8083576d989e6d249ba9807c6b0b", "status": "affected", "version": "84597a44a9d86ac949900441cea7da0af0f2f473", "versionType": "git"}, {"lessThan": "5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775", "status": "affected", "version": "84597a44a9d86ac949900441cea7da0af0f2f473", "versionType": "git"}, {"lessThan": "6228722c27304e4682cddc1fede03898f87e4414", "status": "affected", "version": "84597a44a9d86ac949900441cea7da0af0f2f473", "versionType": "git"}, {"lessThan": "68c5c42567bc462139128968ebbfadd0aefff519", "status": "affected", "version": "84597a44a9d86ac949900441cea7da0af0f2f473", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["Documentation/admin-guide/device-mapper/dm-ima.rst", "Documentation/admin-guide/device-mapper/dm-integrity.rst", "drivers/md/dm-integrity.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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()."}], "id": "CVE-2026-90333", "lastModified": "2026-10-21T13:20:51.030", "metrics": {}, "published": "2026-09-17T17:17:31.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/388c3f6496bb8083576d989e6d249ba9807c6b0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[84597a44a9d86ac949900441cea7da0af0f2f473,5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[84597a44a9d86ac949900441cea7da0af0f2f473,6228722c27304e4682cddc1fede03898f87e4414)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[84597a44a9d86ac949900441cea7da0af0f2f473,68c5c42567bc462139128968ebbfadd0aefff519)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T04:30:16.551079+00:00", "updated": "2026-09-19T04:45:06.169748+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-275", "CWE-615", "CWE-286"]}