{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()  During fuzz testing, the following issue was discovered:  BUG: KMSAN: uninit-value in __dma_map_sg_attrs+0x217/0x310  __dma_map_sg_attrs+0x217/0x310  dma_map_sg_attrs+0x4a/0x70  ata_qc_issue+0x9f8/0x1420  __ata_scsi_queuecmd+0x1657/0x1740  ata_scsi_queuecmd+0x79a/0x920  scsi_queue_rq+0x4472/0x4f40  blk_mq_dispatch_rq_list+0x1cca/0x3ee0  __blk_mq_sched_dispatch_requests+0x458/0x630  blk_mq_sched_dispatch_requests+0x15b/0x340  __blk_mq_run_hw_queue+0xe5/0x250  __blk_mq_delay_run_hw_queue+0x138/0x780  blk_mq_run_hw_queue+0x4bb/0x7e0  blk_mq_sched_insert_request+0x2a7/0x4c0  blk_execute_rq+0x497/0x8a0  sg_io+0xbe0/0xe20  scsi_ioctl+0x2b36/0x3c60  sr_block_ioctl+0x319/0x440  blkdev_ioctl+0x80f/0xd70  __se_sys_ioctl+0x219/0x420  __x64_sys_ioctl+0x93/0xe0  x64_sys_call+0x1d6c/0x3ad0  do_syscall_64+0x4c/0xa0  entry_SYSCALL_64_after_hwframe+0x6e/0xd8  Uninit was created at:  __alloc_pages+0x5c0/0xc80  alloc_pages+0xe0e/0x1050  blk_rq_map_user_iov+0x2b77/0x6100  blk_rq_map_user_io+0x2fa/0x4d0  sg_io+0xad6/0xe20  scsi_ioctl+0x2b36/0x3c60  sr_block_ioctl+0x319/0x440  blkdev_ioctl+0x80f/0xd70  __se_sys_ioctl+0x219/0x420  __x64_sys_ioctl+0x93/0xe0  x64_sys_call+0x1d6c/0x3ad0  do_syscall_64+0x4c/0xa0  entry_SYSCALL_64_after_hwframe+0x6e/0xd8  Bytes 14-15 of 16 are uninitialized Memory access of size 16 starts at ffff88800cbdb000  When processing the last unaligned element of the scatterlist, it is supplemented with missing bytes in the amount of pad_len.  These bytes remain uninitialized, which leads to a problem.  Extend last_sg-\u003elength by pad_len first, then use sg_zero_buffer() to zero those pad_len bytes.  sg_zero_buffer() uses sg_miter internally, which correctly handles sg entries spanning multiple pages and padding that crosses a page boundary.  Found by Linux Verification Center (linuxtesting.org) with Syzkaller.",
  "id": "DEBIAN-CVE-2026-89515",
  "modified": "2026-09-15T08:47:27.574814757Z",
  "published": "2026-09-11T20:19:34.040Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89515"
    }
  ],
  "upstream": [
    "CVE-2026-89515"
  ]
}