« Volver al listado

CVE-2024-56581

Estado: ModificadaAlta (7.8)—

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

btrfs: ref-verify: fix use-after-free after invalid ref action

At btrfs_ref_tree_mod() after we successfully inserted the new ref entry (local variable 'ref') into the respective block entry's rbtree (local variable 'be'), if we find an unexpected action of BTRFS_DROP_DELAYED_REF, we error out and free the ref entry without removing it from the block entry's rbtree.

Leer descripción completaMostrar menos

Then in the error path of btrfs_ref_tree_mod() we call btrfs_free_ref_cache(), which iterates over all block entries and then calls free_block_entry() for each one, and there we will trigger a use-after-free when we are called against the block entry to which we added the freed ref entry to its rbtree, since the rbtree still points to the block entry, as we didn't remove it from the rbtree before freeing it in the error path at btrfs_ref_tree_mod(). Fix this by removing the new ref entry from the rbtree before freeing it.

Syzbot report this with the following stack traces:

Detalles técnicos trazas, registros y código del informe original
   BTRFS error (device loop0 state EA):   Ref action 2, root 5, ref_root 0, parent 8564736, owner 0, offset 0, num_refs 18446744073709551615
      __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523
      update_ref_for_cow+0x9cd/0x11f0 fs/btrfs/ctree.c:512
      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594
      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754
      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116
      btrfs_insert_empty_items+0x9c/0x1a0 fs/btrfs/ctree.c:4314
      btrfs_insert_empty_item fs/btrfs/ctree.h:669 [inline]
      btrfs_insert_orphan_item+0x1f1/0x320 fs/btrfs/orphan.c:23
      btrfs_orphan_add+0x6d/0x1a0 fs/btrfs/inode.c:3482
      btrfs_unlink+0x267/0x350 fs/btrfs/inode.c:4293
      vfs_unlink+0x365/0x650 fs/namei.c:4469
      do_unlinkat+0x4ae/0x830 fs/namei.c:4533
      __do_sys_unlinkat fs/namei.c:4576 [inline]
      __se_sys_unlinkat fs/namei.c:4569 [inline]
      __x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4569
      do_syscall_x64 arch/x86/entry/common.c:52 [inline]
      do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
      entry_SYSCALL_64_after_hwframe+0x77/0x7f
   BTRFS error (device loop0 state EA):   Ref action 1, root 5, ref_root 5, parent 0, owner 260, offset 0, num_refs 1
      __btrfs_mod_ref+0x76b/0xac0 fs/btrfs/extent-tree.c:2521
      update_ref_for_cow+0x96a/0x11f0
      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594
      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754
      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116
      btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411
      __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030
      btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1114 [inline]
      __btrfs_commit_inode_delayed_items+0x2318/0x24a0 fs/btrfs/delayed-inode.c:1137
      __btrfs_run_delayed_items+0x213/0x490 fs/btrfs/delayed-inode.c:1171
      btrfs_commit_transaction+0x8a8/0x3740 fs/btrfs/transaction.c:2313
      prepare_to_relocate+0x3c4/0x4c0 fs/btrfs/relocation.c:3586
      relocate_block_group+0x16c/0xd40 fs/btrfs/relocation.c:3611
      btrfs_relocate_block_group+0x77d/0xd90 fs/btrfs/relocation.c:4081
      btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3377
      __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4161
      btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4538
   BTRFS error (device loop0 state EA):   Ref action 2, root 5, ref_root 0, parent 8564736, owner 0, offset 0, num_refs 18446744073709551615
      __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523
      update_ref_for_cow+0x9cd/0x11f0 fs/btrfs/ctree.c:512
      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594
      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754
      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116
      btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411
      __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030
      btrfs_update_delayed_i
---truncated---

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de use-after-free (CWE-416) en kernel Linux con acceso local y privilegios limitados (AV:L/PR:L). Permite DoS por corrupción de memoria y potencial lectura de datos. Explotable localmente sin interacción del usuario.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-56581",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-56581",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-11T15:42:39.280771Z"
        }
      }
    ],
    "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": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "dfb9fe7de61f34cc241ab3900bdde93341096e0e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "6fd018aa168e472ce35be32296d109db6adb87ea",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "d2b85ce0561fde894e28fa01bd5d32820d585006",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "6370db28af9a8ae3bbdfe97f8a48f8f995e144cf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "4275ac2741941c9c7c2293619fdbacb9f70ba85b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "a6f9e7a0bf1185c9070c0de03bb85eafb9abd650",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd708b81d972a0714b02a60eb4792fdbf15868c4",
              "lessThan": "7c4e39f9d2af4abaf82ca0e315d1fd340456620f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/btrfs/ref-verify.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/btrfs/ref-verify.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-12-27T15:15:17.207",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4275ac2741941c9c7c2293619fdbacb9f70ba85b",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6370db28af9a8ae3bbdfe97f8a48f8f995e144cf",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6fd018aa168e472ce35be32296d109db6adb87ea",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7c4e39f9d2af4abaf82ca0e315d1fd340456620f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a6f9e7a0bf1185c9070c0de03bb85eafb9abd650",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d2b85ce0561fde894e28fa01bd5d32820d585006",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dfb9fe7de61f34cc241ab3900bdde93341096e0e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: ref-verify: fix use-after-free after invalid ref action\n\nAt btrfs_ref_tree_mod() after we successfully inserted the new ref entry\n(local variable 'ref') into the respective block entry's rbtree (local\nvariable 'be'), if we find an unexpected action of BTRFS_DROP_DELAYED_REF,\nwe error out and free the ref entry without removing it from the block\nentry's rbtree. Then in the error path of btrfs_ref_tree_mod() we call\nbtrfs_free_ref_cache(), which iterates over all block entries and then\ncalls free_block_entry() for each one, and there we will trigger a\nuse-after-free when we are called against the block entry to which we\nadded the freed ref entry to its rbtree, since the rbtree still points\nto the block entry, as we didn't remove it from the rbtree before freeing\nit in the error path at btrfs_ref_tree_mod(). Fix this by removing the\nnew ref entry from the rbtree before freeing it.\n\nSyzbot report this with the following stack traces:\n\n   BTRFS error (device loop0 state EA):   Ref action 2, root 5, ref_root 0, parent 8564736, owner 0, offset 0, num_refs 18446744073709551615\n      __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523\n      update_ref_for_cow+0x9cd/0x11f0 fs/btrfs/ctree.c:512\n      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594\n      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754\n      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116\n      btrfs_insert_empty_items+0x9c/0x1a0 fs/btrfs/ctree.c:4314\n      btrfs_insert_empty_item fs/btrfs/ctree.h:669 [inline]\n      btrfs_insert_orphan_item+0x1f1/0x320 fs/btrfs/orphan.c:23\n      btrfs_orphan_add+0x6d/0x1a0 fs/btrfs/inode.c:3482\n      btrfs_unlink+0x267/0x350 fs/btrfs/inode.c:4293\n      vfs_unlink+0x365/0x650 fs/namei.c:4469\n      do_unlinkat+0x4ae/0x830 fs/namei.c:4533\n      __do_sys_unlinkat fs/namei.c:4576 [inline]\n      __se_sys_unlinkat fs/namei.c:4569 [inline]\n      __x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4569\n      do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n      do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n      entry_SYSCALL_64_after_hwframe+0x77/0x7f\n   BTRFS error (device loop0 state EA):   Ref action 1, root 5, ref_root 5, parent 0, owner 260, offset 0, num_refs 1\n      __btrfs_mod_ref+0x76b/0xac0 fs/btrfs/extent-tree.c:2521\n      update_ref_for_cow+0x96a/0x11f0\n      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594\n      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754\n      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116\n      btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411\n      __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030\n      btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1114 [inline]\n      __btrfs_commit_inode_delayed_items+0x2318/0x24a0 fs/btrfs/delayed-inode.c:1137\n      __btrfs_run_delayed_items+0x213/0x490 fs/btrfs/delayed-inode.c:1171\n      btrfs_commit_transaction+0x8a8/0x3740 fs/btrfs/transaction.c:2313\n      prepare_to_relocate+0x3c4/0x4c0 fs/btrfs/relocation.c:3586\n      relocate_block_group+0x16c/0xd40 fs/btrfs/relocation.c:3611\n      btrfs_relocate_block_group+0x77d/0xd90 fs/btrfs/relocation.c:4081\n      btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3377\n      __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4161\n      btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4538\n   BTRFS error (device loop0 state EA):   Ref action 2, root 5, ref_root 0, parent 8564736, owner 0, offset 0, num_refs 18446744073709551615\n      __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523\n      update_ref_for_cow+0x9cd/0x11f0 fs/btrfs/ctree.c:512\n      btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594\n      btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754\n      btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116\n      btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411\n      __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030\n      btrfs_update_delayed_i\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: ref-verify: corrige use-after-free después de una acción de referencia no válida En btrfs_ref_tree_mod() después de que insertamos exitosamente la nueva entrada de referencia (variable local 'ref') en el rbtree de la entrada de bloque respectiva (variable local 'be'), si encontramos una acción inesperada de BTRFS_DROP_DELAYED_REF, generamos un error y liberamos la entrada de referencia sin eliminarla del rbtree de la entrada de bloque. Luego, en la ruta de error de btrfs_ref_tree_mod(), llamamos a btrfs_free_ref_cache(), que itera sobre todas las entradas de bloque y luego llama a free_block_entry() para cada una, y allí activaremos un use-after-free cuando se nos llame contra la entrada de bloque a la que agregamos la entrada de referencia liberada a su rbtree, ya que el rbtree todavía apunta a la entrada de bloque, ya que no la eliminamos del rbtree antes de liberarla en la ruta de error en btrfs_ref_tree_mod(). Solucione esto eliminando la nueva entrada de referencia del rbtree antes de liberarla. Syzbot informa esto con los siguientes seguimientos de pila: Error BTRFS (estado EA del bucle0 del dispositivo): Ref acción 2, raíz 5, ref_root 0, padre 8564736, propietario 0, desplazamiento 0, num_refs 18446744073709551615 __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523 update_ref_for_cow+0x9cd/0x11f0 fs/btrfs/ctree.c:512 btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594 btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754 btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116 btrfs_insert_empty_items+0x9c/0x1a0 fs/btrfs/ctree.c:4314 btrfs_insert_empty_item fs/btrfs/ctree.h:669 [en línea] btrfs_insert_orphan_item+0x1f1/0x320 fs/btrfs/orphan.c:23 btrfs_orphan_add+0x6d/0x1a0 fs/btrfs/inode.c:3482 btrfs_unlink+0x267/0x350 fs/btrfs/inode.c:4293 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlinkat fs/namei.c:4576 [en línea] __se_sys_unlinkat fs/namei.c:4569 [en línea] __x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4569 do_syscall_x64 arch/x86/entry/common.c:52 [en línea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Error BTRFS (estado del dispositivo loop0 EA): Ref acción 1, raíz 5, ref_root 5, padre 0, propietario 260, desplazamiento 0, núm_refs 1 __btrfs_mod_ref+0x76b/0xac0 fs/btrfs/extent-tree.c:2521 actualización_ref_para_vaca+0x96a/0x11f0 btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594 btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754 btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116 btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411 __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030 btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1114 [en línea] __btrfs_commit_inode_delayed_items+0x2318/0x24a0 fs/btrfs/delayed-inode.c:1137 __btrfs_run_delayed_items+0x213/0x490 fs/btrfs/delayed-inode.c:1171 btrfs_commit_transaction+0x8a8/0x3740 fs/btrfs/transaction.c:2313 prepare_to_relocate+0x3c4/0x4c0 fs/btrfs/relocation.c:3586 relocate_block_group+0x16c/0xd40 fs/btrfs/relocation.c:3611 btrfs_relocate_block_group+0x77d/0xd90 fs/btrfs/relocation.c:4081 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3377 __btrfs_balance+0x1b0f/0x26b0 fs/btrfs/volumes.c:4161 btrfs_balance+0xbdc/0x10c0 fs/btrfs/volumes.c:4538 Error BTRFS (estado del dispositivo loop0 EA): Acción de referencia 2, raíz 5, ref_root 0, padre 8564736, propietario 0, desplazamiento 0, num_refs 18446744073709551615 __btrfs_mod_ref+0x7dd/0xac0 fs/btrfs/extent-tree.c:2523 actualización_ref_para_vaca+0x9cd/0x11f0 fs/btrfs/ctree.c:512 btrfs_force_cow_block+0x9f6/0x1da0 fs/btrfs/ctree.c:594 btrfs_cow_block+0x35e/0xa40 fs/btrfs/ctree.c:754 btrfs_search_slot+0xbdd/0x30d0 fs/btrfs/ctree.c:2116 btrfs_lookup_inode+0xdc/0x480 fs/btrfs/inode-item.c:411 __btrfs_update_delayed_inode+0x1e7/0xb90 fs/btrfs/delayed-inode.c:1030 btrfs_update_delayed_i ---truncado---"
    }
  ],
  "lastModified": "2026-08-04T11:22:11.630",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B88B3CC-D264-4F47-A543-C7C84926AE08",
              "versionEndExcluding": "5.4.287",
              "versionStartIncluding": "4.15"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935",
              "versionEndExcluding": "5.10.231",
              "versionStartIncluding": "5.5"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "419FD073-1517-4FD5-8158-F94BC68A1E89",
              "versionEndExcluding": "5.15.174",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
              "versionEndExcluding": "6.1.120",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CA16DEE3-ABEC-4449-9F4A-7A3DC4FC36C7",
              "versionEndExcluding": "6.6.64",
              "versionStartIncluding": "6.2"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "04756810-D093-4B43-B1D9-CF5035968061",
              "versionEndExcluding": "6.12.4",
              "versionStartIncluding": "6.7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}