{
  "cveId": "CVE-2023-53265",
  "url": "https://patchblox.com/security/cve/CVE-2023-53265",
  "summary": "CVE-2023-53265 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53265, released September 16, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ubi: ensure that VID header offset \u002B VID header...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ubi: ensure that VID header offset \u002B VID header size \u003C= alloc, size  Ensure that the VID header offset \u002B VID header size does not exceed the allocated area to avoid slab OOB.  BUG: KASAN: slab-out-of-bounds in crc32_body lib/crc32.c:111 [inline] BUG: KASAN: slab-out-of-bounds in crc32_le_generic lib/crc32.c:179 [inline] BUG: KASAN: slab-out-of-bounds in crc32_le_base\u002B0x58c/0x626 lib/crc32.c:197 Read of size 4 at addr ffff88802bb36f00 by task syz-executor136/1555  CPU: 2 PID: 1555 Comm: syz-executor136 Tainted: G        W 6.0.0-1868 #1 Hardware name: Red Hat KVM, BIOS 1.13.0-2.module\u002Bel8.3.0\u002B7860\u002Ba7792d29 04/01/2014 Call Trace:   \u003CTASK\u003E   __dump_stack lib/dump_stack.c:88 [inline]   dump_stack_lvl\u002B0x85/0xad lib/dump_stack.c:106   print_address_description mm/kasan/report.c:317 [inline]   print_report.cold.13\u002B0xb6/0x6bb mm/kasan/report.c:433   kasan_report\u002B0xa7/0x11b mm/kasan/report.c:495   crc32_body lib/crc32.c:111 [inline]   crc32_le_generic lib/crc32.c:179 [inline]   crc32_le_base\u002B0x58c/0x626 lib/crc32.c:197   ubi_io_write_vid_hdr\u002B0x1b7/0x472 drivers/mtd/ubi/io.c:1067   create_vtbl\u002B0x4d5/0x9c4 drivers/mtd/ubi/vtbl.c:317   create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline]   ubi_read_volume_table\u002B0x67b/0x288a drivers/mtd/ubi/vtbl.c:812   ubi_attach\u002B0xf34/0x1603 drivers/mtd/ubi/attach.c:1601   ubi_attach_mtd_dev\u002B0x6f3/0x185e drivers/mtd/ubi/build.c:965   ctrl_cdev_ioctl\u002B0x2db/0x347 drivers/mtd/ubi/cdev.c:1043   vfs_ioctl fs/ioctl.c:51 [inline]   __do_sys_ioctl fs/ioctl.c:870 [inline]   __se_sys_ioctl fs/ioctl.c:856 [inline]   __x64_sys_ioctl\u002B0x193/0x213 fs/ioctl.c:856   do_syscall_x64 arch/x86/entry/common.c:50 [inline]   do_syscall_64\u002B0x3e/0x86 arch/x86/entry/common.c:80   entry_SYSCALL_64_after_hwframe\u002B0x63/0x0 RIP: 0033:0x7f96d5cf753d Code: RSP: 002b:00007fffd72206f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96d5cf753d RDX: 0000000020000080 RSI: 0000000040186f40 RDI: 0000000000000003 RBP: 0000000000400cd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400be0 R13: 00007fffd72207e0 R14: 0000000000000000 R15: 0000000000000000   \u003C/TASK\u003E  Allocated by task 1555:   kasan_save_stack\u002B0x20/0x3d mm/kasan/common.c:38   kasan_set_track mm/kasan/common.c:45 [inline]   set_alloc_info mm/kasan/common.c:437 [inline]   ____kasan_kmalloc mm/kasan/common.c:516 [inline]   __kasan_kmalloc\u002B0x88/0xa3 mm/kasan/common.c:525   kasan_kmalloc include/linux/kasan.h:234 [inline]   __kmalloc\u002B0x138/0x257 mm/slub.c:4429   kmalloc include/linux/slab.h:605 [inline]   ubi_alloc_vid_buf drivers/mtd/ubi/ubi.h:1093 [inline]   create_vtbl\u002B0xcc/0x9c4 drivers/mtd/ubi/vtbl.c:295   create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline]   ubi_read_volume_table\u002B0x67b/0x288a drivers/mtd/ubi/vtbl.c:812   ubi_attach\u002B0xf34/0x1603 drivers/mtd/ubi/attach.c:1601   ubi_attach_mtd_dev\u002B0x6f3/0x185e drivers/mtd/ubi/build.c:965   ctrl_cdev_ioctl\u002B0x2db/0x347 drivers/mtd/ubi/cdev.c:1043   vfs_ioctl fs/ioctl.c:51 [inline]   __do_sys_ioctl fs/ioctl.c:870 [inline]   __se_sys_ioctl fs/ioctl.c:856 [inline]   __x64_sys_ioctl\u002B0x193/0x213 fs/ioctl.c:856   do_syscall_x64 arch/x86/entry/common.c:50 [inline]   do_syscall_64\u002B0x3e/0x86 arch/x86/entry/common.c:80   entry_SYSCALL_64_after_hwframe\u002B0x63/0x0  The buggy address belongs to the object at ffff88802bb36e00   which belongs to the cache kmalloc-256 of size 256 The buggy address is located 0 bytes to the right of   256-byte region [ffff88802bb36e00, ffff88802bb36f00)  The buggy address belongs to the physical page: page:00000000ea4d1263 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2bb36 head:00000000ea4d1263 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff) raw: 000fffffc0010200 ffffea000066c300 dead000000000003 ffff888100042b40 raw: 0000000000000000 00000000001 ---truncated---",
  "published": "2025-09-16T08:15:35Z",
  "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": 0.00164,
  "epssPercentile": 0.05613,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53265",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53265",
      "released": "2025-09-16T08:15:35Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53265",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53265",
      "released": "2025-09-16T08:15:35Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.20-1",
      "fix": "DEBIAN-CVE-2023-53265",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53265",
      "released": "2025-09-16T08:15:35Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}