CVE-2024-49932

{
  "id": "CVE-2024-49932",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-49932",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-22T13:38:55.739615Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "10e27980f2ff66ba0c6da55f33b4814d5bc86573",
              "lessThan": "f7a1218a983ab98aba140dc20b25f60b39ee4033",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "10e27980f2ff66ba0c6da55f33b4814d5bc86573",
              "lessThan": "04915240e2c3a018e4c7f23418478d27226c8957",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/btrfs/relocation.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.7",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.11.*"
            },
            {
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/btrfs/relocation.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-10-21T18:15:15.140",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/04915240e2c3a018e4c7f23418478d27226c8957",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f7a1218a983ab98aba140dc20b25f60b39ee4033",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't readahead the relocation inode on RST\n\nOn relocation we're doing readahead on the relocation inode, but if the\nfilesystem is backed by a RAID stripe tree we can get ENOENT (e.g. due to\npreallocated extents not being mapped in the RST) from the lookup.\n\nBut readahead doesn't handle the error and submits invalid reads to the\ndevice, causing an assertion in the scatter-gather list code:\n\n  BTRFS info (device nvme1n1): balance: start -d -m -s\n  BTRFS info (device nvme1n1): relocating block group 6480920576 flags data|raid0\n  BTRFS error (device nvme1n1): cannot find raid-stripe for logical [6481928192, 6481969152] devid 2, profile raid0\n  ------------[ cut here ]------------\n  kernel BUG at include/linux/scatterlist.h:115!\n  Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI\n  CPU: 0 PID: 1012 Comm: btrfs Not tainted 6.10.0-rc7+ #567\n  RIP: 0010:__blk_rq_map_sg+0x339/0x4a0\n  RSP: 0018:ffffc90001a43820 EFLAGS: 00010202\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea00045d4802\n  RDX: 0000000117520000 RSI: 0000000000000000 RDI: ffff8881027d1000\n  RBP: 0000000000003000 R08: ffffea00045d4902 R09: 0000000000000000\n  R10: 0000000000000000 R11: 0000000000001000 R12: ffff8881003d10b8\n  R13: ffffc90001a438f0 R14: 0000000000000000 R15: 0000000000003000\n  FS:  00007fcc048a6900(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000002cd11000 CR3: 00000001109ea001 CR4: 0000000000370eb0\n  Call Trace:\n   <TASK>\n   ? __die_body.cold+0x14/0x25\n   ? die+0x2e/0x50\n   ? do_trap+0xca/0x110\n   ? do_error_trap+0x65/0x80\n   ? __blk_rq_map_sg+0x339/0x4a0\n   ? exc_invalid_op+0x50/0x70\n   ? __blk_rq_map_sg+0x339/0x4a0\n   ? asm_exc_invalid_op+0x1a/0x20\n   ? __blk_rq_map_sg+0x339/0x4a0\n   nvme_prep_rq.part.0+0x9d/0x770\n   nvme_queue_rq+0x7d/0x1e0\n   __blk_mq_issue_directly+0x2a/0x90\n   ? blk_mq_get_budget_and_tag+0x61/0x90\n   blk_mq_try_issue_list_directly+0x56/0xf0\n   blk_mq_flush_plug_list.part.0+0x52b/0x5d0\n   __blk_flush_plug+0xc6/0x110\n   blk_finish_plug+0x28/0x40\n   read_pages+0x160/0x1c0\n   page_cache_ra_unbounded+0x109/0x180\n   relocate_file_extent_cluster+0x611/0x6a0\n   ? btrfs_search_slot+0xba4/0xd20\n   ? balance_dirty_pages_ratelimited_flags+0x26/0xb00\n   relocate_data_extent.constprop.0+0x134/0x160\n   relocate_block_group+0x3f2/0x500\n   btrfs_relocate_block_group+0x250/0x430\n   btrfs_relocate_chunk+0x3f/0x130\n   btrfs_balance+0x71b/0xef0\n   ? kmalloc_trace_noprof+0x13b/0x280\n   btrfs_ioctl+0x2c2e/0x3030\n   ? kvfree_call_rcu+0x1e6/0x340\n   ? list_lru_add_obj+0x66/0x80\n   ? mntput_no_expire+0x3a/0x220\n   __x64_sys_ioctl+0x96/0xc0\n   do_syscall_64+0x54/0x110\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n  RIP: 0033:0x7fcc04514f9b\n  Code: Unable to access opcode bytes at 0x7fcc04514f71.\n  RSP: 002b:00007ffeba923370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n  RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fcc04514f9b\n  RDX: 00007ffeba923460 RSI: 00000000c4009420 RDI: 0000000000000003\n  RBP: 0000000000000000 R08: 0000000000000013 R09: 0000000000000001\n  R10: 00007fcc043fbba8 R11: 0000000000000246 R12: 00007ffeba924fc5\n  R13: 00007ffeba923460 R14: 0000000000000002 R15: 00000000004d4bb0\n   </TASK>\n  Modules linked in:\n  ---[ end trace 0000000000000000 ]---\n  RIP: 0010:__blk_rq_map_sg+0x339/0x4a0\n  RSP: 0018:ffffc90001a43820 EFLAGS: 00010202\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea00045d4802\n  RDX: 0000000117520000 RSI: 0000000000000000 RDI: ffff8881027d1000\n  RBP: 0000000000003000 R08: ffffea00045d4902 R09: 0000000000000000\n  R10: 0000000000000000 R11: 0000000000001000 R12: ffff8881003d10b8\n  R13: ffffc90001a438f0 R14: 0000000000000000 R15: 0000000000003000\n  FS:  00007fcc048a6900(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00007fcc04514f71 CR3: 00000001109ea001 CR4: 0000000000370eb0\n  Kernel p\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: no leer con anticipación el inodo de reubicación en RST En la reubicación, hacemos lectura anticipada en el inodo de reubicación, pero si el sistema de archivos está respaldado por un árbol de bandas RAID, podemos obtener ENOENT (por ejemplo, debido a que las extensiones preasignadas no se asignan en el RST) a partir de la búsqueda. Pero readahead no maneja el error y envía lecturas no válidas al dispositivo, lo que causa una afirmación en el código de la lista scatter-gather: BTRFS info (device nvme1n1): balance: start -d -m -s BTRFS info (device nvme1n1): relocating block group 6480920576 flags data|raid0 BTRFS error (device nvme1n1): cannot find raid-stripe for logical [6481928192, 6481969152] devid 2, profile raid0 ------------[ cortar aquí ]------------ ¡ERROR del kernel en include/linux/scatterlist.h:115! Ups: código de operación no válido: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 1012 Comm: btrfs No contaminado 6.10.0-rc7+ #567 RIP: 0010:__blk_rq_map_sg+0x339/0x4a0 RSP: 0018:ffffc90001a43820 EFLAGS: 00010202 RAX: 000000000000000 RBX: 000000000000000 RCX: ffffea00045d4802 RDX: 0000000117520000 RSI: 0000000000000000 RDI: ffff8881027d1000 RBP: 0000000000003000 R08: ffffea00045d4902 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000001000 R12: ffff8881003d10b8 R13: ffffc90001a438f0 R14: 000000000000000 R15: 0000000000003000 FS: 00007fcc048a6900(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002cd11000 CR3: 00000001109ea001 CR4: 0000000000370eb0 Seguimiento de llamadas:  ? __die_body.cold+0x14/0x25 ? die+0x2e/0x50 ? do_trap+0xca/0x110 ? do_error_trap+0x65/0x80 ? __blk_rq_map_sg+0x339/0x4a0 ? exc_invalid_op+0x50/0x70 ? __blk_rq_map_sg+0x339/0x4a0 ? asm_exc_invalid_op+0x1a/0x20 ? __blk_rq_map_sg+0x339/0x4a0 nvme_prep_rq.part.0+0x9d/0x770 nvme_queue_rq+0x7d/0x1e0 __blk_mq_issue_directly+0x2a/0x90 ? blk_mq_get_budget_and_tag+0x61/0x90 blk_mq_try_issue_list_directly+0x56/0xf0 blk_mq_flush_plug_list.part.0+0x52b/0x5d0 __blk_flush_plug+0xc6/0x110 blk_finish_plug+0x28/0x40 read_pages+0x160/0x1c0 page_cache_ra_unbounded+0x109/0x180 relocate_file_extent_cluster+0x611/0x6a0 ? btrfs_search_slot+0xba4/0xd20 ? balance_dirty_pages_ratelimited_flags+0x26/0xb00 relocate_data_extent.constprop.0+0x134/0x160 relocate_block_group+0x3f2/0x500 btrfs_relocate_block_group+0x250/0x430 btrfs_relocate_chunk+0x3f/0x130 btrfs_balance+0x71b/0xef0 ? kmalloc_trace_noprof+0x13b/0x280 btrfs_ioctl+0x2c2e/0x3030 ? kvfree_call_rcu+0x1e6/0x340 ? list_lru_add_obj+0x66/0x80 ? mntput_no_expire+0x3a/0x220 __x64_sys_ioctl+0x96/0xc0 do_syscall_64+0x54/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fcc04514f9b Código: No se puede acceder a los bytes del código de operación en 0x7fcc04514f71. RSP: 002b:00007ffeba923370 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fcc04514f9b RDX: 00007ffeba923460 RSI: 00000000c4009420 RDI: 0000000000000003 RBP: 000000000000000 R08: 0000000000000013 R09: 0000000000000001 R10: 00007fcc043fbba8 R11: 0000000000000246 R12: 00007ffeba924fc5 R13: 00007ffeba923460 R14: 0000000000000002 R15: 00000000004d4bb0  Módulos vinculados en: ---[ fin del seguimiento 000000000000000 ]--- RIP: 0010:__blk_rq_map_sg+0x339/0x4a0 RSP: 0018:ffffc90001a43820 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea00045d4802 RDX: 0000000117520000 RSI: 0000000000000000 RDI: ffff8881027d1000 RBP: 0000000000003000 R08: ffffea00045d4902 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000001000 R12: ffff8881003d10b8 R13: ffffc90001a438f0 R14: 0000000000000000 R15: 0000000000003000 FS: 00007fcc048a6900(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcc04514f71 CR3: 00000001109ea001 CR4: 0000000000370eb0 Núcleo p ---truncado---"
    }
  ],
  "lastModified": "2026-08-04T11:20:58.820",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6D5FF9C2-A011-4A64-B614-F9244ED2EA0D",
              "versionEndExcluding": "6.11.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}