{
  "cveId": "CVE-2025-40349",
  "url": "https://patchblox.com/security/cve/CVE-2025-40349",
  "summary": "CVE-2025-40349 is fixed in 19 products on 1 platform, first by DEBIAN-CVE-2025-40349, released December 16, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  hfs: validate record offset in hfsplus_bmap_allo...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  hfs: validate record offset in hfsplus_bmap_alloc  hfsplus_bmap_alloc can trigger a crash if a record offset or length is larger than node_size  [   15.264282] BUG: KASAN: slab-out-of-bounds in hfsplus_bmap_alloc\u002B0x887/0x8b0 [   15.265192] Read of size 8 at addr ffff8881085ca188 by task test/183 [   15.265949] [   15.266163] CPU: 0 UID: 0 PID: 183 Comm: test Not tainted 6.17.0-rc2-gc17b750b3ad9 #14 PREEMPT(voluntary) [   15.266165] Hardware name: QEMU Ubuntu 24.04 PC (i440FX \u002B PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [   15.266167] Call Trace: [   15.266168]  \u003CTASK\u003E [   15.266169]  dump_stack_lvl\u002B0x53/0x70 [   15.266173]  print_report\u002B0xd0/0x660 [   15.266181]  kasan_report\u002B0xce/0x100 [   15.266185]  hfsplus_bmap_alloc\u002B0x887/0x8b0 [   15.266208]  hfs_btree_inc_height.isra.0\u002B0xd5/0x7c0 [   15.266217]  hfsplus_brec_insert\u002B0x870/0xb00 [   15.266222]  __hfsplus_ext_write_extent\u002B0x428/0x570 [   15.266225]  __hfsplus_ext_cache_extent\u002B0x5e/0x910 [   15.266227]  hfsplus_ext_read_extent\u002B0x1b2/0x200 [   15.266233]  hfsplus_file_extend\u002B0x5a7/0x1000 [   15.266237]  hfsplus_get_block\u002B0x12b/0x8c0 [   15.266238]  __block_write_begin_int\u002B0x36b/0x12c0 [   15.266251]  block_write_begin\u002B0x77/0x110 [   15.266252]  cont_write_begin\u002B0x428/0x720 [   15.266259]  hfsplus_write_begin\u002B0x51/0x100 [   15.266262]  cont_write_begin\u002B0x272/0x720 [   15.266270]  hfsplus_write_begin\u002B0x51/0x100 [   15.266274]  generic_perform_write\u002B0x321/0x750 [   15.266285]  generic_file_write_iter\u002B0xc3/0x310 [   15.266289]  __kernel_write_iter\u002B0x2fd/0x800 [   15.266296]  dump_user_range\u002B0x2ea/0x910 [   15.266301]  elf_core_dump\u002B0x2a94/0x2ed0 [   15.266320]  vfs_coredump\u002B0x1d85/0x45e0 [   15.266349]  get_signal\u002B0x12e3/0x1990 [   15.266357]  arch_do_signal_or_restart\u002B0x89/0x580 [   15.266362]  irqentry_exit_to_user_mode\u002B0xab/0x110 [   15.266364]  asm_exc_page_fault\u002B0x26/0x30 [   15.266366] RIP: 0033:0x41bd35 [   15.266367] Code: bc d1 f3 0f 7f 27 f3 0f 7f 6f 10 f3 0f 7f 77 20 f3 0f 7f 7f 30 49 83 c0 0f 49 29 d0 48 8d 7c 17 31 e9 9f 0b 00 00 66 0f ef c0 \u003Cf3\u003E 0f 6f 0e f3 0f 6f 56 10 66 0f 74 c1 66 0f d7 d0 49 83 f8f [   15.266369] RSP: 002b:00007ffc9e62d078 EFLAGS: 00010283 [   15.266371] RAX: 00007ffc9e62d100 RBX: 0000000000000000 RCX: 0000000000000000 [   15.266372] RDX: 00000000000000e0 RSI: 0000000000000000 RDI: 00007ffc9e62d100 [   15.266373] RBP: 0000400000000040 R08: 00000000000000e0 R09: 0000000000000000 [   15.266374] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [   15.266375] R13: 0000000000000000 R14: 0000000000000000 R15: 0000400000000000 [   15.266376]  \u003C/TASK\u003E  When calling hfsplus_bmap_alloc to allocate a free node, this function first retrieves the bitmap from header node and map node using node-\u003Epage together with the offset and length from hfs_brec_lenoff  \u0060\u0060\u0060 len = hfs_brec_lenoff(node, 2, \u0026off16); off = off16;  off \u002B= node-\u003Epage_offset; pagep = node-\u003Epage \u002B (off \u003E\u003E PAGE_SHIFT); data = kmap_local_page(*pagep); \u0060\u0060\u0060  However, if the retrieved offset or length is invalid(i.e. exceeds node_size), the code may end up accessing pages outside the allocated range for this node.  This patch adds proper validation of both offset and length before use, preventing out-of-bounds page access. Move is_bnode_offset_valid and check_and_correct_requested_length to hfsplus_fs.h, as they may be required by other functions.",
  "published": "2025-12-16T14:15:46Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00155,
  "epssPercentile": 0.04628,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.28.1",
      "fix": "SUSE-SU-2026:0315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0315-1",
      "released": "2026-01-28T14:34:30Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.20.24.1",
      "fix": "SUSE-SU-2026:0281-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0281-1",
      "released": "2026-01-23T16:03:47Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debug",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
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      "fix": "SUSE-SU-2026:0293-1",
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      "released": "2026-01-26T11:36:42Z"
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    {
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      "fix": "SUSE-SU-2026:0315-1",
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      "released": "2026-01-28T14:34:30Z"
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      "fix": "SUSE-SU-2026:0293-1",
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      "released": "2026-01-26T11:36:42Z"
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      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
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      "release": "sles 15.6",
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      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
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    {
      "platform": "linux",
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      "fix": "SUSE-SU-2026:0315-1",
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      "platform": "linux",
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      "release": "opensuse-leap 15.6",
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      "fix": "SUSE-SU-2026:0293-1",
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    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP6_Update_19",
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      "fix": "SUSE-SU-2026:0293-1",
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      "platform": "linux",
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      "release": "sles 15.6",
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      "release": "sles 15.7",
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      "released": "2026-01-26T11:36:42Z"
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    {
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      "release": "sles 15.6",
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      "fix": "SUSE-SU-2026:0293-1",
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      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 15.7",
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      "fix": "SUSE-SU-2026:0315-1",
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      "released": "2026-01-23T16:03:47Z"
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    {
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      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
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    {
      "platform": "linux",
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      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.28.1",
      "fix": "SUSE-SU-2026:0315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0315-1",
      "released": "2026-01-28T14:34:30Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.20.24.1",
      "fix": "SUSE-SU-2026:0281-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0281-1",
      "released": "2026-01-23T16:03:47Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "6.4.0-150600.23.84.1",
      "fix": "SUSE-SU-2026:0293-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0293-1",
      "released": "2026-01-26T11:36:42Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.28.1",
      "fix": "SUSE-SU-2026:0315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0315-1",
      "released": "2026-01-28T14:34:30Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.158-1",
      "fix": "DEBIAN-CVE-2025-40349",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40349",
      "released": "2025-12-16T14:15:46Z"
    },
    {
      "platform": "linux",
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      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.57-1",
      "fix": "DEBIAN-CVE-2025-40349",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40349",
      "released": "2025-12-16T14:15:46Z"
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    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
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      "fix": "DEBIAN-CVE-2025-40349",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40349",
      "released": "2025-12-16T14:15:46Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}