ghsa-6jj6-82pm-r5v3
Vulnerability from github
Published
2025-09-16 15:32
Modified
2025-09-16 15:32
Details

In the Linux kernel, the following vulnerability has been resolved:

ubi: ensure that VID header offset + VID header size <= alloc, size

Ensure that the VID header offset + 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+0x58c/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+el8.3.0+7860+a7792d29 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x85/0xad lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold.13+0xb6/0x6bb mm/kasan/report.c:433 kasan_report+0xa7/0x11b mm/kasan/report.c:495 crc32_body lib/crc32.c:111 [inline] crc32_le_generic lib/crc32.c:179 [inline] crc32_le_base+0x58c/0x626 lib/crc32.c:197 ubi_io_write_vid_hdr+0x1b7/0x472 drivers/mtd/ubi/io.c:1067 create_vtbl+0x4d5/0x9c4 drivers/mtd/ubi/vtbl.c:317 create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline] ubi_read_volume_table+0x67b/0x288a drivers/mtd/ubi/vtbl.c:812 ubi_attach+0xf34/0x1603 drivers/mtd/ubi/attach.c:1601 ubi_attach_mtd_dev+0x6f3/0x185e drivers/mtd/ubi/build.c:965 ctrl_cdev_ioctl+0x2db/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+0x193/0x213 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3e/0x86 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0x0 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

Allocated by task 1555: kasan_save_stack+0x20/0x3d mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] _kasankmalloc mm/kasan/common.c:516 [inline] kasan_kmalloc+0x88/0xa3 mm/kasan/common.c:525 kasan_kmalloc include/linux/kasan.h:234 [inline] __kmalloc+0x138/0x257 mm/slub.c:4429 kmalloc include/linux/slab.h:605 [inline] ubi_alloc_vid_buf drivers/mtd/ubi/ubi.h:1093 [inline] create_vtbl+0xcc/0x9c4 drivers/mtd/ubi/vtbl.c:295 create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline] ubi_read_volume_table+0x67b/0x288a drivers/mtd/ubi/vtbl.c:812 ubi_attach+0xf34/0x1603 drivers/mtd/ubi/attach.c:1601 ubi_attach_mtd_dev+0x6f3/0x185e drivers/mtd/ubi/build.c:965 ctrl_cdev_ioctl+0x2db/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+0x193/0x213 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3e/0x86 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0x0

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---

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53265"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T08:15:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubi: ensure that VID header offset + VID header size \u003c= alloc, size\n\nEnsure that the VID header offset + VID header size does not exceed\nthe allocated area to avoid slab OOB.\n\nBUG: KASAN: slab-out-of-bounds in crc32_body lib/crc32.c:111 [inline]\nBUG: KASAN: slab-out-of-bounds in crc32_le_generic lib/crc32.c:179 [inline]\nBUG: KASAN: slab-out-of-bounds in crc32_le_base+0x58c/0x626 lib/crc32.c:197\nRead of size 4 at addr ffff88802bb36f00 by task syz-executor136/1555\n\nCPU: 2 PID: 1555 Comm: syz-executor136 Tainted: G        W\n6.0.0-1868 #1\nHardware name: Red Hat KVM, BIOS 1.13.0-2.module+el8.3.0+7860+a7792d29\n04/01/2014\nCall Trace:\n  \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x85/0xad lib/dump_stack.c:106\n  print_address_description mm/kasan/report.c:317 [inline]\n  print_report.cold.13+0xb6/0x6bb mm/kasan/report.c:433\n  kasan_report+0xa7/0x11b mm/kasan/report.c:495\n  crc32_body lib/crc32.c:111 [inline]\n  crc32_le_generic lib/crc32.c:179 [inline]\n  crc32_le_base+0x58c/0x626 lib/crc32.c:197\n  ubi_io_write_vid_hdr+0x1b7/0x472 drivers/mtd/ubi/io.c:1067\n  create_vtbl+0x4d5/0x9c4 drivers/mtd/ubi/vtbl.c:317\n  create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline]\n  ubi_read_volume_table+0x67b/0x288a drivers/mtd/ubi/vtbl.c:812\n  ubi_attach+0xf34/0x1603 drivers/mtd/ubi/attach.c:1601\n  ubi_attach_mtd_dev+0x6f3/0x185e drivers/mtd/ubi/build.c:965\n  ctrl_cdev_ioctl+0x2db/0x347 drivers/mtd/ubi/cdev.c:1043\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:870 [inline]\n  __se_sys_ioctl fs/ioctl.c:856 [inline]\n  __x64_sys_ioctl+0x193/0x213 fs/ioctl.c:856\n  do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n  do_syscall_64+0x3e/0x86 arch/x86/entry/common.c:80\n  entry_SYSCALL_64_after_hwframe+0x63/0x0\nRIP: 0033:0x7f96d5cf753d\nCode:\nRSP: 002b:00007fffd72206f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96d5cf753d\nRDX: 0000000020000080 RSI: 0000000040186f40 RDI: 0000000000000003\nRBP: 0000000000400cd0 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400be0\nR13: 00007fffd72207e0 R14: 0000000000000000 R15: 0000000000000000\n  \u003c/TASK\u003e\n\nAllocated by task 1555:\n  kasan_save_stack+0x20/0x3d mm/kasan/common.c:38\n  kasan_set_track mm/kasan/common.c:45 [inline]\n  set_alloc_info mm/kasan/common.c:437 [inline]\n  ____kasan_kmalloc mm/kasan/common.c:516 [inline]\n  __kasan_kmalloc+0x88/0xa3 mm/kasan/common.c:525\n  kasan_kmalloc include/linux/kasan.h:234 [inline]\n  __kmalloc+0x138/0x257 mm/slub.c:4429\n  kmalloc include/linux/slab.h:605 [inline]\n  ubi_alloc_vid_buf drivers/mtd/ubi/ubi.h:1093 [inline]\n  create_vtbl+0xcc/0x9c4 drivers/mtd/ubi/vtbl.c:295\n  create_empty_lvol drivers/mtd/ubi/vtbl.c:500 [inline]\n  ubi_read_volume_table+0x67b/0x288a drivers/mtd/ubi/vtbl.c:812\n  ubi_attach+0xf34/0x1603 drivers/mtd/ubi/attach.c:1601\n  ubi_attach_mtd_dev+0x6f3/0x185e drivers/mtd/ubi/build.c:965\n  ctrl_cdev_ioctl+0x2db/0x347 drivers/mtd/ubi/cdev.c:1043\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:870 [inline]\n  __se_sys_ioctl fs/ioctl.c:856 [inline]\n  __x64_sys_ioctl+0x193/0x213 fs/ioctl.c:856\n  do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n  do_syscall_64+0x3e/0x86 arch/x86/entry/common.c:80\n  entry_SYSCALL_64_after_hwframe+0x63/0x0\n\nThe buggy address belongs to the object at ffff88802bb36e00\n  which belongs to the cache kmalloc-256 of size 256\nThe buggy address is located 0 bytes to the right of\n  256-byte region [ffff88802bb36e00, ffff88802bb36f00)\n\nThe buggy address belongs to the physical page:\npage:00000000ea4d1263 refcount:1 mapcount:0 mapping:0000000000000000\nindex:0x0 pfn:0x2bb36\nhead:00000000ea4d1263 order:1 compound_mapcount:0 compound_pincount:0\nflags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff)\nraw: 000fffffc0010200 ffffea000066c300 dead000000000003 ffff888100042b40\nraw: 0000000000000000 00000000001\n---truncated---",
  "id": "GHSA-6jj6-82pm-r5v3",
  "modified": "2025-09-16T15:32:32Z",
  "published": "2025-09-16T15:32:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53265"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b42b1a36fc946f0d7088425b90d491b4257ca3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61aeba0e4b4124cfe3c5427feaf29c626dfa89e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61e04db3bec87f7dd10074296deb7d083e2ccade"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/701bb3ed5a88a73ebbe1266895bdeff065226dca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/771e207a839a29ba943e89f473b0fecd16089e2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/846bfba34175c23b13cc2023c2d67b96e8c14c43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1b73fe4f4c6bb80755eb4bf4b867a8fd8b1a7fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7adb740f97b6fa84e658892dcb08e37a31a4e77"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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