{
  "cveId": "CVE-2021-47219",
  "url": "https://patchblox.com/security/cve/CVE-2021-47219",
  "summary": "CVE-2021-47219 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47219, released April 10, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: scsi_debug: Fix out-of-bound read in resp_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()  The following issue was observed running syzkaller:  BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer\u002B0x150/0x1c0 lib/scatterlist.c:831 Read of size 2132 at addr ffff8880aea95dc8 by task syz-executor.0/9815  CPU: 0 PID: 9815 Comm: syz-executor.0 Not tainted 4.19.202-00874-gfc0fe04215a9 #2 Hardware name: QEMU Standard PC (i440FX \u002B PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Call Trace:  __dump_stack lib/dump_stack.c:77 [inline]  dump_stack\u002B0xe4/0x14a lib/dump_stack.c:118  print_address_description\u002B0x73/0x280 mm/kasan/report.c:253  kasan_report_error mm/kasan/report.c:352 [inline]  kasan_report\u002B0x272/0x370 mm/kasan/report.c:410  memcpy\u002B0x1f/0x50 mm/kasan/kasan.c:302  memcpy include/linux/string.h:377 [inline]  sg_copy_buffer\u002B0x150/0x1c0 lib/scatterlist.c:831  fill_from_dev_buffer\u002B0x14f/0x340 drivers/scsi/scsi_debug.c:1021  resp_report_tgtpgs\u002B0x5aa/0x770 drivers/scsi/scsi_debug.c:1772  schedule_resp\u002B0x464/0x12f0 drivers/scsi/scsi_debug.c:4429  scsi_debug_queuecommand\u002B0x467/0x1390 drivers/scsi/scsi_debug.c:5835  scsi_dispatch_cmd\u002B0x3fc/0x9b0 drivers/scsi/scsi_lib.c:1896  scsi_request_fn\u002B0x1042/0x1810 drivers/scsi/scsi_lib.c:2034  __blk_run_queue_uncond block/blk-core.c:464 [inline]  __blk_run_queue\u002B0x1a4/0x380 block/blk-core.c:484  blk_execute_rq_nowait\u002B0x1c2/0x2d0 block/blk-exec.c:78  sg_common_write.isra.19\u002B0xd74/0x1dc0 drivers/scsi/sg.c:847  sg_write.part.23\u002B0x6e0/0xd00 drivers/scsi/sg.c:716  sg_write\u002B0x64/0xa0 drivers/scsi/sg.c:622  __vfs_write\u002B0xed/0x690 fs/read_write.c:485 kill_bdev:block_device:00000000e138492c  vfs_write\u002B0x184/0x4c0 fs/read_write.c:549  ksys_write\u002B0x107/0x240 fs/read_write.c:599  do_syscall_64\u002B0xc2/0x560 arch/x86/entry/common.c:293  entry_SYSCALL_64_after_hwframe\u002B0x49/0xbe  We get \u0027alen\u0027 from command its type is int. If userspace passes a large length we will get a negative \u0027alen\u0027.  Switch n, alen, and rlen to u32.",
  "published": "2024-04-10T19:15:48Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.0025,
  "epssPercentile": 0.16384,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47219",
      "released": "2024-04-10T19:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47219",
      "released": "2024-04-10T19:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47219",
      "released": "2024-04-10T19:15:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}