{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-89586", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89586", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-09-11T19:44:51.322Z", "updatedAt": "2026-10-19T08:49:18.983Z", "importedAt": "2026-10-24T01:58:35.090Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ata: libata-scsi: fix DSM TRIM for sector sizes larger than 2048 bytes", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: libata-scsi: fix DSM TRIM for sector sizes larger than 2048 bytes\n\nata_scsi_write_same_xlat() translates a SCSI WRITE SAME command with the\nUNMAP bit set into an ATA DATA SET MANAGEMENT TRIM command. The TRIM\ndescriptor is built by ata_format_dsm_trim_descr() into the 2048-byte\nata_scsi_rbuf staging buffer, and the number of bytes copied is compared\nagainst the logical sector size by the caller:\n\n\tsize = ata_format_dsm_trim_descr(scmd, trmax, block, n_block);\n\tif (size != len)\t\t/* len == sdp->sector_size */\n\t\tgoto invalid_param_len;\n\nata_format_dsm_trim_descr() clamps the copy length to ATA_SCSI_RBUF_SIZE\n(2048). On a device whose logical sector size exceeds that (e.g. a 4Kn\ndevice, where sector_size == 4096) the function can never return more than\n2048, while the caller expects it to return sector_size. The comparison\ntherefore always fails, so every TRIM is rejected with \"Parameter list\nlength error\" and WARN_ON() splats on each attempt. TRIM / discard is\nthus completely broken on such devices.\n\nThe descriptor was incorrectly sized from the logical sector size. A DSM\nTRIM payload is a list of 512-byte pages, each holding up to\nATA_MAX_TRIM_RNUM (64) LBA Range Entries, and is independent of the logical\nsector size. The Block Limits VPD page already advertises a single such\npage as the maximum WRITE SAME length (65535 * ATA_MAX_TRIM_RNUM logical\nblocks), so the block layer never sends a request that needs more than one\npage.\n\nEmit exactly one 512-byte page, independent of the logical sector size,\nand transfer only that page (COUNT == 1). For a 512-byte-sector device\nthis is unchanged; devices with larger logical sectors now work instead of\nfailing every TRIM.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "07975b8daa3b0ab3cbc02cc48ea7bc48fadcec53" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "b7b5ab2df325ffbbad7ca2debaa071e024d68cb5" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "07baa310ea3224a7044b1ca84796bb37a235af1f" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "977554ed91b54075fbc0bac536316b4841ef6258" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "04e2befe25792f2e90097f284d7e86fc6bcfe928" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "c2e3dccd6870659851eaa4c12ab16418b8e3040a" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "4a4268a0b0a595bd9534cf9c7fda93775a7d8a0d" }, { "version": "ef2d7392c4ece5c3cd12a6c7ca9366cd8f189aff", "status": "affected", "versionType": "git", "lessThan": "79cce911e623c0baa0fde307ce3a434e084b881a" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.9", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.9" }, { "version": "5.10.270", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.221", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.188", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.157", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.109", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.50", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.2.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.2.*" }, { "version": "7.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }