{"api_version":"1","generated_at":"2026-09-13T06:11:19+00:00","cve":"CVE-2026-89515","urls":{"html":"https://cve.report/CVE-2026-89515","api":"https://cve.report/api/cve/CVE-2026-89515.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89515","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89515"},"summary":{"title":"scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()\n\nDuring fuzz testing, the following issue was discovered:\n\nBUG: KMSAN: uninit-value in __dma_map_sg_attrs+0x217/0x310\n __dma_map_sg_attrs+0x217/0x310\n dma_map_sg_attrs+0x4a/0x70\n ata_qc_issue+0x9f8/0x1420\n __ata_scsi_queuecmd+0x1657/0x1740\n ata_scsi_queuecmd+0x79a/0x920\n scsi_queue_rq+0x4472/0x4f40\n blk_mq_dispatch_rq_list+0x1cca/0x3ee0\n __blk_mq_sched_dispatch_requests+0x458/0x630\n blk_mq_sched_dispatch_requests+0x15b/0x340\n __blk_mq_run_hw_queue+0xe5/0x250\n __blk_mq_delay_run_hw_queue+0x138/0x780\n blk_mq_run_hw_queue+0x4bb/0x7e0\n blk_mq_sched_insert_request+0x2a7/0x4c0\n blk_execute_rq+0x497/0x8a0\n sg_io+0xbe0/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nUninit was created at:\n __alloc_pages+0x5c0/0xc80\n alloc_pages+0xe0e/0x1050\n blk_rq_map_user_iov+0x2b77/0x6100\n blk_rq_map_user_io+0x2fa/0x4d0\n sg_io+0xad6/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nBytes 14-15 of 16 are uninitialized\nMemory access of size 16 starts at ffff88800cbdb000\n\nWhen processing the last unaligned element of the scatterlist, it is\nsupplemented with missing bytes in the amount of pad_len.  These bytes\nremain uninitialized, which leads to a problem.\n\nExtend last_sg->length by pad_len first, then use sg_zero_buffer() to\nzero those pad_len bytes.  sg_zero_buffer() uses sg_miter internally,\nwhich correctly handles sg entries spanning multiple pages and padding\nthat crosses a page boundary.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:34","updated_at":"2026-09-11 20:19:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409","name":"https://git.kernel.org/stable/c/6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a4353ec7742bdf87dcdde5875270feb3a1982a51","name":"https://git.kernel.org/stable/c/a4353ec7742bdf87dcdde5875270feb3a1982a51","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e7143c3f4e5c0a7986733c6f27009274bf6c4264","name":"https://git.kernel.org/stable/c/e7143c3f4e5c0a7986733c6f27009274bf6c4264","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/626147717bea776b61ed3631d2c26283760c4cc4","name":"https://git.kernel.org/stable/c/626147717bea776b61ed3631d2c26283760c4cc4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89515","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89515","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 40b01b9bbdf51ae543a04744283bf2d56c4a6afa a4353ec7742bdf87dcdde5875270feb3a1982a51 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 40b01b9bbdf51ae543a04744283bf2d56c4a6afa e7143c3f4e5c0a7986733c6f27009274bf6c4264 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 40b01b9bbdf51ae543a04744283bf2d56c4a6afa 6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 40b01b9bbdf51ae543a04744283bf2d56c4a6afa 626147717bea776b61ed3631d2c26283760c4cc4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.25","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.25 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89515","cve":"CVE-2026-89515","epss":"0.001680000","percentile":"0.063340000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/scsi/scsi_lib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a4353ec7742bdf87dcdde5875270feb3a1982a51","status":"affected","version":"40b01b9bbdf51ae543a04744283bf2d56c4a6afa","versionType":"git"},{"lessThan":"e7143c3f4e5c0a7986733c6f27009274bf6c4264","status":"affected","version":"40b01b9bbdf51ae543a04744283bf2d56c4a6afa","versionType":"git"},{"lessThan":"6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409","status":"affected","version":"40b01b9bbdf51ae543a04744283bf2d56c4a6afa","versionType":"git"},{"lessThan":"626147717bea776b61ed3631d2c26283760c4cc4","status":"affected","version":"40b01b9bbdf51ae543a04744283bf2d56c4a6afa","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/scsi/scsi_lib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.25"},{"lessThan":"2.6.25","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"2.6.25","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()\n\nDuring fuzz testing, the following issue was discovered:\n\nBUG: KMSAN: uninit-value in __dma_map_sg_attrs+0x217/0x310\n __dma_map_sg_attrs+0x217/0x310\n dma_map_sg_attrs+0x4a/0x70\n ata_qc_issue+0x9f8/0x1420\n __ata_scsi_queuecmd+0x1657/0x1740\n ata_scsi_queuecmd+0x79a/0x920\n scsi_queue_rq+0x4472/0x4f40\n blk_mq_dispatch_rq_list+0x1cca/0x3ee0\n __blk_mq_sched_dispatch_requests+0x458/0x630\n blk_mq_sched_dispatch_requests+0x15b/0x340\n __blk_mq_run_hw_queue+0xe5/0x250\n __blk_mq_delay_run_hw_queue+0x138/0x780\n blk_mq_run_hw_queue+0x4bb/0x7e0\n blk_mq_sched_insert_request+0x2a7/0x4c0\n blk_execute_rq+0x497/0x8a0\n sg_io+0xbe0/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nUninit was created at:\n __alloc_pages+0x5c0/0xc80\n alloc_pages+0xe0e/0x1050\n blk_rq_map_user_iov+0x2b77/0x6100\n blk_rq_map_user_io+0x2fa/0x4d0\n sg_io+0xad6/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nBytes 14-15 of 16 are uninitialized\nMemory access of size 16 starts at ffff88800cbdb000\n\nWhen processing the last unaligned element of the scatterlist, it is\nsupplemented with missing bytes in the amount of pad_len.  These bytes\nremain uninitialized, which leads to a problem.\n\nExtend last_sg->length by pad_len first, then use sg_zero_buffer() to\nzero those pad_len bytes.  sg_zero_buffer() uses sg_miter internally,\nwhich correctly handles sg entries spanning multiple pages and padding\nthat crosses a page boundary.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:43:59.300Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a4353ec7742bdf87dcdde5875270feb3a1982a51"},{"url":"https://git.kernel.org/stable/c/e7143c3f4e5c0a7986733c6f27009274bf6c4264"},{"url":"https://git.kernel.org/stable/c/6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409"},{"url":"https://git.kernel.org/stable/c/626147717bea776b61ed3631d2c26283760c4cc4"}],"title":"scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89515","datePublished":"2026-09-11T19:43:59.300Z","dateReserved":"2026-09-11T19:38:34.717Z","dateUpdated":"2026-09-11T19:43:59.300Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:34","lastModifiedDate":"2026-09-11 20:19:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89515","Ordinal":"1","Title":"scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()","CVE":"CVE-2026-89515","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89515","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()\n\nDuring fuzz testing, the following issue was discovered:\n\nBUG: KMSAN: uninit-value in __dma_map_sg_attrs+0x217/0x310\n __dma_map_sg_attrs+0x217/0x310\n dma_map_sg_attrs+0x4a/0x70\n ata_qc_issue+0x9f8/0x1420\n __ata_scsi_queuecmd+0x1657/0x1740\n ata_scsi_queuecmd+0x79a/0x920\n scsi_queue_rq+0x4472/0x4f40\n blk_mq_dispatch_rq_list+0x1cca/0x3ee0\n __blk_mq_sched_dispatch_requests+0x458/0x630\n blk_mq_sched_dispatch_requests+0x15b/0x340\n __blk_mq_run_hw_queue+0xe5/0x250\n __blk_mq_delay_run_hw_queue+0x138/0x780\n blk_mq_run_hw_queue+0x4bb/0x7e0\n blk_mq_sched_insert_request+0x2a7/0x4c0\n blk_execute_rq+0x497/0x8a0\n sg_io+0xbe0/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nUninit was created at:\n __alloc_pages+0x5c0/0xc80\n alloc_pages+0xe0e/0x1050\n blk_rq_map_user_iov+0x2b77/0x6100\n blk_rq_map_user_io+0x2fa/0x4d0\n sg_io+0xad6/0xe20\n scsi_ioctl+0x2b36/0x3c60\n sr_block_ioctl+0x319/0x440\n blkdev_ioctl+0x80f/0xd70\n __se_sys_ioctl+0x219/0x420\n __x64_sys_ioctl+0x93/0xe0\n x64_sys_call+0x1d6c/0x3ad0\n do_syscall_64+0x4c/0xa0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\nBytes 14-15 of 16 are uninitialized\nMemory access of size 16 starts at ffff88800cbdb000\n\nWhen processing the last unaligned element of the scatterlist, it is\nsupplemented with missing bytes in the amount of pad_len.  These bytes\nremain uninitialized, which leads to a problem.\n\nExtend last_sg->length by pad_len first, then use sg_zero_buffer() to\nzero those pad_len bytes.  sg_zero_buffer() uses sg_miter internally,\nwhich correctly handles sg entries spanning multiple pages and padding\nthat crosses a page boundary.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","Type":"Description","Title":"scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()"}]}}}