cve-2024-49934
Vulnerability from cvelistv5
Published
2024-10-21 18:01
Modified
2024-12-19 09:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name It's observed that a crash occurs during hot-remove a memory device, in which user is accessing the hugetlb. See calltrace as following: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 14045 at arch/x86/mm/fault.c:1278 do_user_addr_fault+0x2a0/0x790 Modules linked in: kmem device_dax cxl_mem cxl_pmem cxl_port cxl_pci dax_hmem dax_pmem nd_pmem cxl_acpi nd_btt cxl_core crc32c_intel nvme virtiofs fuse nvme_core nfit libnvdimm dm_multipath scsi_dh_rdac scsi_dh_emc s mirror dm_region_hash dm_log dm_mod CPU: 1 PID: 14045 Comm: daxctl Not tainted 6.10.0-rc2-lizhijian+ #492 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 RIP: 0010:do_user_addr_fault+0x2a0/0x790 Code: 48 8b 00 a8 04 0f 84 b5 fe ff ff e9 1c ff ff ff 4c 89 e9 4c 89 e2 be 01 00 00 00 bf 02 00 00 00 e8 b5 ef 24 00 e9 42 fe ff ff <0f> 0b 48 83 c4 08 4c 89 ea 48 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41 RSP: 0000:ffffc90000a575f0 EFLAGS: 00010046 RAX: ffff88800c303600 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000001000 RSI: ffffffff82504162 RDI: ffffffff824b2c36 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000a57658 R13: 0000000000001000 R14: ffff88800bc2e040 R15: 0000000000000000 FS: 00007f51cb57d880(0000) GS:ffff88807fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000001000 CR3: 00000000072e2004 CR4: 00000000001706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? __warn+0x8d/0x190 ? do_user_addr_fault+0x2a0/0x790 ? report_bug+0x1c3/0x1d0 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? do_user_addr_fault+0x2a0/0x790 ? exc_page_fault+0x31/0x200 exc_page_fault+0x68/0x200 <...snip...> BUG: unable to handle page fault for address: 0000000000001000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI ---[ end trace 0000000000000000 ]--- BUG: unable to handle page fault for address: 0000000000001000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 14045 Comm: daxctl Kdump: loaded Tainted: G W 6.10.0-rc2-lizhijian+ #492 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 RIP: 0010:dentry_name+0x1f4/0x440 <...snip...> ? dentry_name+0x2fa/0x440 vsnprintf+0x1f3/0x4f0 vprintk_store+0x23a/0x540 vprintk_emit+0x6d/0x330 _printk+0x58/0x80 dump_mapping+0x10b/0x1a0 ? __pfx_free_object_rcu+0x10/0x10 __dump_page+0x26b/0x3e0 ? vprintk_emit+0xe0/0x330 ? _printk+0x58/0x80 ? dump_page+0x17/0x50 dump_page+0x17/0x50 do_migrate_range+0x2f7/0x7f0 ? do_migrate_range+0x42/0x7f0 ? offline_pages+0x2f4/0x8c0 offline_pages+0x60a/0x8c0 memory_subsys_offline+0x9f/0x1c0 ? lockdep_hardirqs_on+0x77/0x100 ? _raw_spin_unlock_irqrestore+0x38/0x60 device_offline+0xe3/0x110 state_store+0x6e/0xc0 kernfs_fop_write_iter+0x143/0x200 vfs_write+0x39f/0x560 ksys_write+0x65/0xf0 do_syscall_64+0x62/0x130 Previously, some sanity check have been done in dump_mapping() before the print facility parsing '%pd' though, it's still possible to run into an invalid dentry.d_name.name. Since dump_mapping() only needs to dump the filename only, retrieve it by itself in a safer way to prevent an unnecessary crash. Note that either retrieving the filename with '%pd' or strncpy_from_kernel_nofault(), the filename could be unreliable.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a4159138e718db6199f0abf376ad52f726dcc5c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7f7b850689ac06a62befe26e1fd1806799e7f152Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0f6ee75f50476607ca82fc7c3711c795ce09b52
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef921bc72328b577cb45772ff7921cba4773b74aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49934",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:38:39.445288Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:42.703Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1a4159138e718db6199f0abf376ad52f726dcc5c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e0f6ee75f50476607ca82fc7c3711c795ce09b52",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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            {
              "lessThan": "ef921bc72328b577cb45772ff7921cba4773b74a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "7f7b850689ac06a62befe26e1fd1806799e7f152",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name\n\nIt\u0027s observed that a crash occurs during hot-remove a memory device,\nin which user is accessing the hugetlb. See calltrace as following:\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 14045 at arch/x86/mm/fault.c:1278 do_user_addr_fault+0x2a0/0x790\nModules linked in: kmem device_dax cxl_mem cxl_pmem cxl_port cxl_pci dax_hmem dax_pmem nd_pmem cxl_acpi nd_btt cxl_core crc32c_intel nvme virtiofs fuse nvme_core nfit libnvdimm dm_multipath scsi_dh_rdac scsi_dh_emc s\nmirror dm_region_hash dm_log dm_mod\nCPU: 1 PID: 14045 Comm: daxctl Not tainted 6.10.0-rc2-lizhijian+ #492\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\nRIP: 0010:do_user_addr_fault+0x2a0/0x790\nCode: 48 8b 00 a8 04 0f 84 b5 fe ff ff e9 1c ff ff ff 4c 89 e9 4c 89 e2 be 01 00 00 00 bf 02 00 00 00 e8 b5 ef 24 00 e9 42 fe ff ff \u003c0f\u003e 0b 48 83 c4 08 4c 89 ea 48 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41\nRSP: 0000:ffffc90000a575f0 EFLAGS: 00010046\nRAX: ffff88800c303600 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000001000 RSI: ffffffff82504162 RDI: ffffffff824b2c36\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000a57658\nR13: 0000000000001000 R14: ffff88800bc2e040 R15: 0000000000000000\nFS:  00007f51cb57d880(0000) GS:ffff88807fd00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000001000 CR3: 00000000072e2004 CR4: 00000000001706f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? __warn+0x8d/0x190\n ? do_user_addr_fault+0x2a0/0x790\n ? report_bug+0x1c3/0x1d0\n ? handle_bug+0x3c/0x70\n ? exc_invalid_op+0x14/0x70\n ? asm_exc_invalid_op+0x16/0x20\n ? do_user_addr_fault+0x2a0/0x790\n ? exc_page_fault+0x31/0x200\n exc_page_fault+0x68/0x200\n\u003c...snip...\u003e\nBUG: unable to handle page fault for address: 0000000000001000\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\n ---[ end trace 0000000000000000 ]---\n BUG: unable to handle page fault for address: 0000000000001000\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 14045 Comm: daxctl Kdump: loaded Tainted: G        W          6.10.0-rc2-lizhijian+ #492\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\n RIP: 0010:dentry_name+0x1f4/0x440\n\u003c...snip...\u003e\n? dentry_name+0x2fa/0x440\nvsnprintf+0x1f3/0x4f0\nvprintk_store+0x23a/0x540\nvprintk_emit+0x6d/0x330\n_printk+0x58/0x80\ndump_mapping+0x10b/0x1a0\n? __pfx_free_object_rcu+0x10/0x10\n__dump_page+0x26b/0x3e0\n? vprintk_emit+0xe0/0x330\n? _printk+0x58/0x80\n? dump_page+0x17/0x50\ndump_page+0x17/0x50\ndo_migrate_range+0x2f7/0x7f0\n? do_migrate_range+0x42/0x7f0\n? offline_pages+0x2f4/0x8c0\noffline_pages+0x60a/0x8c0\nmemory_subsys_offline+0x9f/0x1c0\n? lockdep_hardirqs_on+0x77/0x100\n? _raw_spin_unlock_irqrestore+0x38/0x60\ndevice_offline+0xe3/0x110\nstate_store+0x6e/0xc0\nkernfs_fop_write_iter+0x143/0x200\nvfs_write+0x39f/0x560\nksys_write+0x65/0xf0\ndo_syscall_64+0x62/0x130\n\nPreviously, some sanity check have been done in dump_mapping() before\nthe print facility parsing \u0027%pd\u0027 though, it\u0027s still possible to run into\nan invalid dentry.d_name.name.\n\nSince dump_mapping() only needs to dump the filename only, retrieve it\nby itself in a safer way to prevent an unnecessary crash.\n\nNote that either retrieving the filename with \u0027%pd\u0027 or\nstrncpy_from_kernel_nofault(), the filename could be unreliable."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:29:20.775Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1a4159138e718db6199f0abf376ad52f726dcc5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0f6ee75f50476607ca82fc7c3711c795ce09b52"
        },
        {
          "url": "https://git.kernel.org/stable/c/f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef921bc72328b577cb45772ff7921cba4773b74a"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f7b850689ac06a62befe26e1fd1806799e7f152"
        }
      ],
      "title": "fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49934",
    "datePublished": "2024-10-21T18:01:55.752Z",
    "dateReserved": "2024-10-21T12:17:06.040Z",
    "dateUpdated": "2024-12-19T09:29:20.775Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-49934\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T18:15:15.273\",\"lastModified\":\"2024-12-14T21:15:30.690\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name\\n\\nIt\u0027s observed that a crash occurs during hot-remove a memory device,\\nin which user is accessing the hugetlb. See calltrace as following:\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 1 PID: 14045 at arch/x86/mm/fault.c:1278 do_user_addr_fault+0x2a0/0x790\\nModules linked in: kmem device_dax cxl_mem cxl_pmem cxl_port cxl_pci dax_hmem dax_pmem nd_pmem cxl_acpi nd_btt cxl_core crc32c_intel nvme virtiofs fuse nvme_core nfit libnvdimm dm_multipath scsi_dh_rdac scsi_dh_emc s\\nmirror dm_region_hash dm_log dm_mod\\nCPU: 1 PID: 14045 Comm: daxctl Not tainted 6.10.0-rc2-lizhijian+ #492\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:do_user_addr_fault+0x2a0/0x790\\nCode: 48 8b 00 a8 04 0f 84 b5 fe ff ff e9 1c ff ff ff 4c 89 e9 4c 89 e2 be 01 00 00 00 bf 02 00 00 00 e8 b5 ef 24 00 e9 42 fe ff ff \u003c0f\u003e 0b 48 83 c4 08 4c 89 ea 48 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41\\nRSP: 0000:ffffc90000a575f0 EFLAGS: 00010046\\nRAX: ffff88800c303600 RBX: 0000000000000000 RCX: 0000000000000000\\nRDX: 0000000000001000 RSI: ffffffff82504162 RDI: ffffffff824b2c36\\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000a57658\\nR13: 0000000000001000 R14: ffff88800bc2e040 R15: 0000000000000000\\nFS:  00007f51cb57d880(0000) GS:ffff88807fd00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000001000 CR3: 00000000072e2004 CR4: 00000000001706f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n ? __warn+0x8d/0x190\\n ? do_user_addr_fault+0x2a0/0x790\\n ? report_bug+0x1c3/0x1d0\\n ? handle_bug+0x3c/0x70\\n ? exc_invalid_op+0x14/0x70\\n ? asm_exc_invalid_op+0x16/0x20\\n ? do_user_addr_fault+0x2a0/0x790\\n ? exc_page_fault+0x31/0x200\\n exc_page_fault+0x68/0x200\\n\u003c...snip...\u003e\\nBUG: unable to handle page fault for address: 0000000000001000\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\\n ---[ end trace 0000000000000000 ]---\\n BUG: unable to handle page fault for address: 0000000000001000\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\\n CPU: 1 PID: 14045 Comm: daxctl Kdump: loaded Tainted: G        W          6.10.0-rc2-lizhijian+ #492\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\\n RIP: 0010:dentry_name+0x1f4/0x440\\n\u003c...snip...\u003e\\n? dentry_name+0x2fa/0x440\\nvsnprintf+0x1f3/0x4f0\\nvprintk_store+0x23a/0x540\\nvprintk_emit+0x6d/0x330\\n_printk+0x58/0x80\\ndump_mapping+0x10b/0x1a0\\n? __pfx_free_object_rcu+0x10/0x10\\n__dump_page+0x26b/0x3e0\\n? vprintk_emit+0xe0/0x330\\n? _printk+0x58/0x80\\n? dump_page+0x17/0x50\\ndump_page+0x17/0x50\\ndo_migrate_range+0x2f7/0x7f0\\n? do_migrate_range+0x42/0x7f0\\n? offline_pages+0x2f4/0x8c0\\noffline_pages+0x60a/0x8c0\\nmemory_subsys_offline+0x9f/0x1c0\\n? lockdep_hardirqs_on+0x77/0x100\\n? _raw_spin_unlock_irqrestore+0x38/0x60\\ndevice_offline+0xe3/0x110\\nstate_store+0x6e/0xc0\\nkernfs_fop_write_iter+0x143/0x200\\nvfs_write+0x39f/0x560\\nksys_write+0x65/0xf0\\ndo_syscall_64+0x62/0x130\\n\\nPreviously, some sanity check have been done in dump_mapping() before\\nthe print facility parsing \u0027%pd\u0027 though, it\u0027s still possible to run into\\nan invalid dentry.d_name.name.\\n\\nSince dump_mapping() only needs to dump the filename only, retrieve it\\nby itself in a safer way to prevent an unnecessary crash.\\n\\nNote that either retrieving the filename with \u0027%pd\u0027 or\\nstrncpy_from_kernel_nofault(), the filename could be unreliable.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/inode: Evitar que dump_mapping() acceda a dentry.d_name.name no v\u00e1lido Se observa que se produce un bloqueo durante la eliminaci\u00f3n activa de un dispositivo de memoria, en el que el usuario est\u00e1 accediendo a hugetlb. Consulte el seguimiento de llamadas de la siguiente manera: ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 1 PID: 14045 en arch/x86/mm/fault.c:1278 do_user_addr_fault+0x2a0/0x790 M\u00f3dulos vinculados en: kmem device_dax cxl_mem cxl_pmem cxl_port cxl_pci dax_hmem dax_pmem nd_pmem cxl_acpi nd_btt cxl_core crc32c_intel nvme virtiofs fuse nvme_core nfit libnvdimm dm_multipath scsi_dh_rdac scsi_dh_emc s mirror dm_region_hash dm_log dm_mod CPU: 1 PID: 14045 Comm: daxctl No contaminado 6.10.0-rc2-lizhijian+ #492 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 01/04/2014 RIP: 0010:do_user_addr_fault+0x2a0/0x790 C\u00f3digo: 48 8b 00 a8 04 0f 84 b5 fe ff ff e9 1c ff ff ff 4c 89 e9 4c 89 e2 be 01 00 00 00 bf 02 00 00 00 e8 b5 ef 24 00 e9 42 fe ff ff \u0026lt;0f\u0026gt; 0b 48 83 c4 08 4c 89 ea 48 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41 RSP: 0000:ffffc90000a575f0 EFLAGS: 00010046 RAX: ffff88800c303600 RBX: 0000000000000000 RCX: 000000000000000 RDX: 00000000000001000 RSI: ffffffff82504162 RDI: ffffffff824b2c36 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000000000 R11: 0000000000000000 R12: ffffc90000a57658 R13: 0000000000001000 R14: ffff88800bc2e040 R15: 000000000000000 FS: 00007f51cb57d880(0000) GS:ffff88807fd00000(0000) knlGS:000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000001000 CR3: 00000000072e2004 CR4: 00000000001706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas:  ? __warn+0x8d/0x190 ? do_user_addr_fault+0x2a0/0x790 ? report_bug+0x1c3/0x1d0 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? do_user_addr_fault+0x2a0/0x790 ? exc_page_fault+0x31/0x200 exc_page_fault+0x68/0x200 \u0026lt;...snip...\u0026gt; ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: 0000000000001000 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI ---[ fin del seguimiento 000000000000000 ]--- ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: 0000000000001000 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 14045 Comm: daxctl Kdump: cargado Tainted: GW 6.10.0-rc2-lizhijian+ #492 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 RIP: 0010:dentry_name+0x1f4/0x440 \u0026lt;...snip...\u0026gt; ? dentry_name+0x2fa/0x440 vsnprintf+0x1f3/0x4f0 vprintk_store+0x23a/0x540 vprintk_emit+0x6d/0x330 _printk+0x58/0x80 dump_mapping+0x10b/0x1a0 ? __pfx_free_object_rcu+0x10/0x10 __dump_page+0x26b/0x3e0 ? vprintk_emit+0xe0/0x330 ? _printk+0x58/0x80 ? dump_page+0x17/0x50  dump_page+0x17/0x50 do_migrate_range+0x2f7/0x7f0 ? do_migrate_range+0x42/0x7f0 ? offline_pages+0x2f4/0x8c0 offline_pages+0x60a/0x8c0 memory_subsys_offline+0x9f/0x1c0 ? lockdep_hardirqs_on+0x77/0x100 ? _raw_spin_unlock_irqrestore+0x38/0x60 device_offline+0xe3/0x110 state_store+0x6e/0xc0 kernfs_fop_write_iter+0x143/0x200 vfs_write+0x39f/0x560 ksys_write+0x65/0xf0 do_syscall_64+0x62/0x130 Anteriormente, se han realizado algunas comprobaciones de cordura en dump_mapping() antes de que la funci\u00f3n de impresi\u00f3n analice \u0027%pd\u0027, aunque a\u00fan es posible encontrarse con un dentry.d_name.name no v\u00e1lido. Dado que dump_mapping() solo necesita volcar el nombre del archivo, recup\u00e9relo por s\u00ed mismo de una manera m\u00e1s segura para ----truncado---\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.6,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"PHYSICAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"652638C5-5F25-4DF3-AD42-DD3252A97152\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1a4159138e718db6199f0abf376ad52f726dcc5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7f7b850689ac06a62befe26e1fd1806799e7f152\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e0f6ee75f50476607ca82fc7c3711c795ce09b52\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef921bc72328b577cb45772ff7921cba4773b74a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49934\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:38:39.445288Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:38:43.438Z\"}}], \"cna\": {\"title\": \"fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"1a4159138e718db6199f0abf376ad52f726dcc5c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"e0f6ee75f50476607ca82fc7c3711c795ce09b52\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"ef921bc72328b577cb45772ff7921cba4773b74a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"7f7b850689ac06a62befe26e1fd1806799e7f152\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/inode.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"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\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/inode.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1a4159138e718db6199f0abf376ad52f726dcc5c\"}, {\"url\": \"https://git.kernel.org/stable/c/e0f6ee75f50476607ca82fc7c3711c795ce09b52\"}, {\"url\": \"https://git.kernel.org/stable/c/f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98\"}, {\"url\": \"https://git.kernel.org/stable/c/ef921bc72328b577cb45772ff7921cba4773b74a\"}, {\"url\": \"https://git.kernel.org/stable/c/7f7b850689ac06a62befe26e1fd1806799e7f152\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name\\n\\nIt\u0027s observed that a crash occurs during hot-remove a memory device,\\nin which user is accessing the hugetlb. See calltrace as following:\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 1 PID: 14045 at arch/x86/mm/fault.c:1278 do_user_addr_fault+0x2a0/0x790\\nModules linked in: kmem device_dax cxl_mem cxl_pmem cxl_port cxl_pci dax_hmem dax_pmem nd_pmem cxl_acpi nd_btt cxl_core crc32c_intel nvme virtiofs fuse nvme_core nfit libnvdimm dm_multipath scsi_dh_rdac scsi_dh_emc s\\nmirror dm_region_hash dm_log dm_mod\\nCPU: 1 PID: 14045 Comm: daxctl Not tainted 6.10.0-rc2-lizhijian+ #492\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:do_user_addr_fault+0x2a0/0x790\\nCode: 48 8b 00 a8 04 0f 84 b5 fe ff ff e9 1c ff ff ff 4c 89 e9 4c 89 e2 be 01 00 00 00 bf 02 00 00 00 e8 b5 ef 24 00 e9 42 fe ff ff \u003c0f\u003e 0b 48 83 c4 08 4c 89 ea 48 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41\\nRSP: 0000:ffffc90000a575f0 EFLAGS: 00010046\\nRAX: ffff88800c303600 RBX: 0000000000000000 RCX: 0000000000000000\\nRDX: 0000000000001000 RSI: ffffffff82504162 RDI: ffffffff824b2c36\\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000a57658\\nR13: 0000000000001000 R14: ffff88800bc2e040 R15: 0000000000000000\\nFS:  00007f51cb57d880(0000) GS:ffff88807fd00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000001000 CR3: 00000000072e2004 CR4: 00000000001706f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n ? __warn+0x8d/0x190\\n ? do_user_addr_fault+0x2a0/0x790\\n ? report_bug+0x1c3/0x1d0\\n ? handle_bug+0x3c/0x70\\n ? exc_invalid_op+0x14/0x70\\n ? asm_exc_invalid_op+0x16/0x20\\n ? do_user_addr_fault+0x2a0/0x790\\n ? exc_page_fault+0x31/0x200\\n exc_page_fault+0x68/0x200\\n\u003c...snip...\u003e\\nBUG: unable to handle page fault for address: 0000000000001000\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\\n ---[ end trace 0000000000000000 ]---\\n BUG: unable to handle page fault for address: 0000000000001000\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 800000000ad92067 P4D 800000000ad92067 PUD 7677067 PMD 0\\n Oops: Oops: 0000 [#1] PREEMPT SMP PTI\\n CPU: 1 PID: 14045 Comm: daxctl Kdump: loaded Tainted: G        W          6.10.0-rc2-lizhijian+ #492\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\\n RIP: 0010:dentry_name+0x1f4/0x440\\n\u003c...snip...\u003e\\n? dentry_name+0x2fa/0x440\\nvsnprintf+0x1f3/0x4f0\\nvprintk_store+0x23a/0x540\\nvprintk_emit+0x6d/0x330\\n_printk+0x58/0x80\\ndump_mapping+0x10b/0x1a0\\n? __pfx_free_object_rcu+0x10/0x10\\n__dump_page+0x26b/0x3e0\\n? vprintk_emit+0xe0/0x330\\n? _printk+0x58/0x80\\n? dump_page+0x17/0x50\\ndump_page+0x17/0x50\\ndo_migrate_range+0x2f7/0x7f0\\n? do_migrate_range+0x42/0x7f0\\n? offline_pages+0x2f4/0x8c0\\noffline_pages+0x60a/0x8c0\\nmemory_subsys_offline+0x9f/0x1c0\\n? lockdep_hardirqs_on+0x77/0x100\\n? _raw_spin_unlock_irqrestore+0x38/0x60\\ndevice_offline+0xe3/0x110\\nstate_store+0x6e/0xc0\\nkernfs_fop_write_iter+0x143/0x200\\nvfs_write+0x39f/0x560\\nksys_write+0x65/0xf0\\ndo_syscall_64+0x62/0x130\\n\\nPreviously, some sanity check have been done in dump_mapping() before\\nthe print facility parsing \u0027%pd\u0027 though, it\u0027s still possible to run into\\nan invalid dentry.d_name.name.\\n\\nSince dump_mapping() only needs to dump the filename only, retrieve it\\nby itself in a safer way to prevent an unnecessary crash.\\n\\nNote that either retrieving the filename with \u0027%pd\u0027 or\\nstrncpy_from_kernel_nofault(), the filename could be unreliable.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:29:20.775Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49934\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:29:20.775Z\", \"dateReserved\": \"2024-10-21T12:17:06.040Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:01:55.752Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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