CVE-2024-46733
Vulnerability from cvelistv5
Published
2024-09-18 06:32
Modified
2024-12-19 09:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix qgroup reserve leaks in cow_file_range In the buffered write path, the dirty page owns the qgroup reserve until it creates an ordered_extent. Therefore, any errors that occur before the ordered_extent is created must free that reservation, or else the space is leaked. The fstest generic/475 exercises various IO error paths, and is able to trigger errors in cow_file_range where we fail to get to allocating the ordered extent. Note that because we *do* clear delalloc, we are likely to remove the inode from the delalloc list, so the inodes/pages to not have invalidate/launder called on them in the commit abort path. This results in failures at the unmount stage of the test that look like: BTRFS: error (device dm-8 state EA) in cleanup_transaction:2018: errno=-5 IO failure BTRFS: error (device dm-8 state EA) in btrfs_replace_file_extents:2416: errno=-5 IO failure BTRFS warning (device dm-8 state EA): qgroup 0/5 has unreleased space, type 0 rsv 28672 ------------[ cut here ]------------ WARNING: CPU: 3 PID: 22588 at fs/btrfs/disk-io.c:4333 close_ctree+0x222/0x4d0 [btrfs] Modules linked in: btrfs blake2b_generic libcrc32c xor zstd_compress raid6_pq CPU: 3 PID: 22588 Comm: umount Kdump: loaded Tainted: G W 6.10.0-rc7-gab56fde445b8 #21 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014 RIP: 0010:close_ctree+0x222/0x4d0 [btrfs] RSP: 0018:ffffb4465283be00 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffa1a1818e1000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffb4465283bbe0 RDI: ffffa1a19374fcb8 RBP: ffffa1a1818e13c0 R08: 0000000100028b16 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000003 R12: ffffa1a18ad7972c R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f9168312b80(0000) GS:ffffa1a4afcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f91683c9140 CR3: 000000010acaa000 CR4: 00000000000006f0 Call Trace: <TASK> ? close_ctree+0x222/0x4d0 [btrfs] ? __warn.cold+0x8e/0xea ? close_ctree+0x222/0x4d0 [btrfs] ? report_bug+0xff/0x140 ? handle_bug+0x3b/0x70 ? exc_invalid_op+0x17/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? close_ctree+0x222/0x4d0 [btrfs] generic_shutdown_super+0x70/0x160 kill_anon_super+0x11/0x40 btrfs_kill_super+0x11/0x20 [btrfs] deactivate_locked_super+0x2e/0xa0 cleanup_mnt+0xb5/0x150 task_work_run+0x57/0x80 syscall_exit_to_user_mode+0x121/0x130 do_syscall_64+0xab/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f916847a887 ---[ end trace 0000000000000000 ]--- BTRFS error (device dm-8 state EA): qgroup reserved space leaked Cases 2 and 3 in the out_reserve path both pertain to this type of leak and must free the reserved qgroup data. Because it is already an error path, I opted not to handle the possible errors in btrfs_free_qgroup_data.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30479f31d44d47ed00ae0c7453d9b253537005b2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e42ef22bc10f0309c0c65d8d6ca8b4127a674b7f
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-46733",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T14:53:35.751159Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2024-09-29T14:53:50.933Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e42ef22bc10f0309c0c65d8d6ca8b4127a674b7f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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            {
              "lessThan": "30479f31d44d47ed00ae0c7453d9b253537005b2",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix qgroup reserve leaks in cow_file_range\n\nIn the buffered write path, the dirty page owns the qgroup reserve until\nit creates an ordered_extent.\n\nTherefore, any errors that occur before the ordered_extent is created\nmust free that reservation, or else the space is leaked. The fstest\ngeneric/475 exercises various IO error paths, and is able to trigger\nerrors in cow_file_range where we fail to get to allocating the ordered\nextent. Note that because we *do* clear delalloc, we are likely to\nremove the inode from the delalloc list, so the inodes/pages to not have\ninvalidate/launder called on them in the commit abort path.\n\nThis results in failures at the unmount stage of the test that look like:\n\n  BTRFS: error (device dm-8 state EA) in cleanup_transaction:2018: errno=-5 IO failure\n  BTRFS: error (device dm-8 state EA) in btrfs_replace_file_extents:2416: errno=-5 IO failure\n  BTRFS warning (device dm-8 state EA): qgroup 0/5 has unreleased space, type 0 rsv 28672\n  ------------[ cut here ]------------\n  WARNING: CPU: 3 PID: 22588 at fs/btrfs/disk-io.c:4333 close_ctree+0x222/0x4d0 [btrfs]\n  Modules linked in: btrfs blake2b_generic libcrc32c xor zstd_compress raid6_pq\n  CPU: 3 PID: 22588 Comm: umount Kdump: loaded Tainted: G W          6.10.0-rc7-gab56fde445b8 #21\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\n  RIP: 0010:close_ctree+0x222/0x4d0 [btrfs]\n  RSP: 0018:ffffb4465283be00 EFLAGS: 00010202\n  RAX: 0000000000000001 RBX: ffffa1a1818e1000 RCX: 0000000000000001\n  RDX: 0000000000000000 RSI: ffffb4465283bbe0 RDI: ffffa1a19374fcb8\n  RBP: ffffa1a1818e13c0 R08: 0000000100028b16 R09: 0000000000000000\n  R10: 0000000000000003 R11: 0000000000000003 R12: ffffa1a18ad7972c\n  R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n  FS:  00007f9168312b80(0000) GS:ffffa1a4afcc0000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00007f91683c9140 CR3: 000000010acaa000 CR4: 00000000000006f0\n  Call Trace:\n   \u003cTASK\u003e\n   ? close_ctree+0x222/0x4d0 [btrfs]\n   ? __warn.cold+0x8e/0xea\n   ? close_ctree+0x222/0x4d0 [btrfs]\n   ? report_bug+0xff/0x140\n   ? handle_bug+0x3b/0x70\n   ? exc_invalid_op+0x17/0x70\n   ? asm_exc_invalid_op+0x1a/0x20\n   ? close_ctree+0x222/0x4d0 [btrfs]\n   generic_shutdown_super+0x70/0x160\n   kill_anon_super+0x11/0x40\n   btrfs_kill_super+0x11/0x20 [btrfs]\n   deactivate_locked_super+0x2e/0xa0\n   cleanup_mnt+0xb5/0x150\n   task_work_run+0x57/0x80\n   syscall_exit_to_user_mode+0x121/0x130\n   do_syscall_64+0xab/0x1a0\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\n  RIP: 0033:0x7f916847a887\n  ---[ end trace 0000000000000000 ]---\n  BTRFS error (device dm-8 state EA): qgroup reserved space leaked\n\nCases 2 and 3 in the out_reserve path both pertain to this type of leak\nand must free the reserved qgroup data. Because it is already an error\npath, I opted not to handle the possible errors in\nbtrfs_free_qgroup_data."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:22:02.371Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e42ef22bc10f0309c0c65d8d6ca8b4127a674b7f"
        },
        {
          "url": "https://git.kernel.org/stable/c/30479f31d44d47ed00ae0c7453d9b253537005b2"
        }
      ],
      "title": "btrfs: fix qgroup reserve leaks in cow_file_range",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46733",
    "datePublished": "2024-09-18T06:32:27.453Z",
    "dateReserved": "2024-09-11T15:12:18.257Z",
    "dateUpdated": "2024-12-19T09:22:02.371Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-46733\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-18T07:15:04.170\",\"lastModified\":\"2024-09-20T12:30:51.220\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: fix qgroup reserve leaks in cow_file_range\\n\\nIn the buffered write path, the dirty page owns the qgroup reserve until\\nit creates an ordered_extent.\\n\\nTherefore, any errors that occur before the ordered_extent is created\\nmust free that reservation, or else the space is leaked. The fstest\\ngeneric/475 exercises various IO error paths, and is able to trigger\\nerrors in cow_file_range where we fail to get to allocating the ordered\\nextent. Note that because we *do* clear delalloc, we are likely to\\nremove the inode from the delalloc list, so the inodes/pages to not have\\ninvalidate/launder called on them in the commit abort path.\\n\\nThis results in failures at the unmount stage of the test that look like:\\n\\n  BTRFS: error (device dm-8 state EA) in cleanup_transaction:2018: errno=-5 IO failure\\n  BTRFS: error (device dm-8 state EA) in btrfs_replace_file_extents:2416: errno=-5 IO failure\\n  BTRFS warning (device dm-8 state EA): qgroup 0/5 has unreleased space, type 0 rsv 28672\\n  ------------[ cut here ]------------\\n  WARNING: CPU: 3 PID: 22588 at fs/btrfs/disk-io.c:4333 close_ctree+0x222/0x4d0 [btrfs]\\n  Modules linked in: btrfs blake2b_generic libcrc32c xor zstd_compress raid6_pq\\n  CPU: 3 PID: 22588 Comm: umount Kdump: loaded Tainted: G W          6.10.0-rc7-gab56fde445b8 #21\\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\\n  RIP: 0010:close_ctree+0x222/0x4d0 [btrfs]\\n  RSP: 0018:ffffb4465283be00 EFLAGS: 00010202\\n  RAX: 0000000000000001 RBX: ffffa1a1818e1000 RCX: 0000000000000001\\n  RDX: 0000000000000000 RSI: ffffb4465283bbe0 RDI: ffffa1a19374fcb8\\n  RBP: ffffa1a1818e13c0 R08: 0000000100028b16 R09: 0000000000000000\\n  R10: 0000000000000003 R11: 0000000000000003 R12: ffffa1a18ad7972c\\n  R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\\n  FS:  00007f9168312b80(0000) GS:ffffa1a4afcc0000(0000) knlGS:0000000000000000\\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n  CR2: 00007f91683c9140 CR3: 000000010acaa000 CR4: 00000000000006f0\\n  Call Trace:\\n   \u003cTASK\u003e\\n   ? close_ctree+0x222/0x4d0 [btrfs]\\n   ? __warn.cold+0x8e/0xea\\n   ? close_ctree+0x222/0x4d0 [btrfs]\\n   ? report_bug+0xff/0x140\\n   ? handle_bug+0x3b/0x70\\n   ? exc_invalid_op+0x17/0x70\\n   ? asm_exc_invalid_op+0x1a/0x20\\n   ? close_ctree+0x222/0x4d0 [btrfs]\\n   generic_shutdown_super+0x70/0x160\\n   kill_anon_super+0x11/0x40\\n   btrfs_kill_super+0x11/0x20 [btrfs]\\n   deactivate_locked_super+0x2e/0xa0\\n   cleanup_mnt+0xb5/0x150\\n   task_work_run+0x57/0x80\\n   syscall_exit_to_user_mode+0x121/0x130\\n   do_syscall_64+0xab/0x1a0\\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n  RIP: 0033:0x7f916847a887\\n  ---[ end trace 0000000000000000 ]---\\n  BTRFS error (device dm-8 state EA): qgroup reserved space leaked\\n\\nCases 2 and 3 in the out_reserve path both pertain to this type of leak\\nand must free the reserved qgroup data. Because it is already an error\\npath, I opted not to handle the possible errors in\\nbtrfs_free_qgroup_data.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: reparar fugas de reserva de qgroup en cow_file_range En la ruta de escritura en b\u00fafer, la p\u00e1gina sucia posee la reserva de qgroup hasta que crea una ordered_extent. Por lo tanto, cualquier error que ocurra antes de que se cree la ordered_extent debe liberar esa reserva, o de lo contrario se pierde el espacio. El fstest generic/475 ejercita varias rutas de error de E/S y puede desencadenar errores en cow_file_range donde no logramos asignar la extensi\u00f3n ordenada. Tenga en cuenta que debido a que *s\u00ed* borramos delalloc, es probable que eliminemos el inodo de la lista de delalloc, por lo que los inodos/p\u00e1ginas no tienen una llamada de invalidaci\u00f3n/lavado en ellos en la ruta de aborto de confirmaci\u00f3n. Esto genera fallas en la etapa de desmontaje de la prueba que se ven as\u00ed: BTRFS: error (dispositivo dm-8 estado EA) en cleanup_transaction:2018: errno=-5 falla de E/S BTRFS: error (dispositivo dm-8 estado EA) en btrfs_replace_file_extents:2416: errno=-5 falla de E/S Advertencia de BTRFS (dispositivo dm-8 estado EA): qgroup 0/5 tiene espacio sin liberar, tipo 0 rsv 28672 ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 3 PID: 22588 en fs/btrfs/disk-io.c:4333 close_ctree+0x222/0x4d0 [btrfs] M\u00f3dulos vinculados en: btrfs blake2b_generic libcrc32c xor zstd_compress raid6_pq CPU: 3 PID: 22588 Comm: umount Kdump: cargado Tainted: GW 6.10.0-rc7-gab56fde445b8 #21 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 01/04/2014 RIP: 0010:close_ctree+0x222/0x4d0 [btrfs] RSP: 0018:ffffb4465283be00 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffa1a1818e1000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffb4465283bbe0 RDI: ffffa1a19374fcb8 RBP: ffffa1a1818e13c0 R08: 0000000100028b16 R09: 0000000000000000 R10: 000000000000003 R11: 0000000000000003 R12: ffffa1a18ad7972c R13: 000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f9168312b80(0000) GS:ffffa1a4afcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f91683c9140 CR3: 000000010acaa000 CR4: 00000000000006f0 Seguimiento de llamadas:  ? close_ctree+0x222/0x4d0 [btrfs] ? __warn.cold+0x8e/0xea ? close_ctree+0x222/0x4d0 [btrfs] ? reportar_error+0xff/0x140 ? manejar_error+0x3b/0x70 ? exc_op_inv\u00e1lida+0x17/0x70 ? asm_exc_op_inv\u00e1lida+0x1a/0x20 ? cerrar_ctree+0x222/0x4d0 [btrfs] apagado_gen\u00e9rico_super+0x70/0x160 matar_an\u00f3nimo_super+0x11/0x40 btrfs_kill_super+0x11/0x20 [btrfs] desactivar_bloqueado_super+0x2e/0xa0 limpieza_mnt+0xb5/0x150 ejecuci\u00f3n_trabajo_tarea+0x57/0x80 salida_llamada_al_sistema_modo_usuario_+0x121/0x130 hacer_llamada_al_sistema_64+0xab/0x1a0 entrada_SYSCALL_64_despu\u00e9s_de_hwframe+0x77/0x7f RIP: 0033:0x7f916847a887 ---[ fin de seguimiento 0000000000000000 ]--- Error BTRFS (estado del dispositivo dm-8 EA): se filtr\u00f3 el espacio reservado del qgroup Los casos 2 y 3 en la ruta out_reserve pertenecen a este tipo de fuga y deben liberar los datos reservados del qgroup. Debido a que ya es una ruta de error, opt\u00e9 por no manejar los posibles errores en btrfs_free_qgroup_data.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/30479f31d44d47ed00ae0c7453d9b253537005b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e42ef22bc10f0309c0c65d8d6ca8b4127a674b7f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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