FKIE_CVE-2024-50151

Vulnerability from fkie_nvd - Published: 2024-11-07 10:15 - Updated: 2026-06-17 08:03
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOBs when building SMB2_IOCTL request When using encryption, either enforced by the server or when using 'seal' mount option, the client will squash all compound request buffers down for encryption into a single iov in smb2_set_next_command(). SMB2_ioctl_init() allocates a small buffer (448 bytes) to hold the SMB2_IOCTL request in the first iov, and if the user passes an input buffer that is greater than 328 bytes, smb2_set_next_command() will end up writing off the end of @rqst->iov[0].iov_base as shown below: mount.cifs //srv/share /mnt -o ...,seal ln -s $(perl -e "print('a')for 1..1024") /mnt/link BUG: KASAN: slab-out-of-bounds in smb2_set_next_command.cold+0x1d6/0x24c [cifs] Write of size 4116 at addr ffff8881148fcab8 by task ln/859 CPU: 1 UID: 0 PID: 859 Comm: ln Not tainted 6.12.0-rc3 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x5d/0x80 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] print_report+0x156/0x4d9 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] ? __virt_addr_valid+0x145/0x310 ? __phys_addr+0x46/0x90 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] kasan_report+0xda/0x110 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] kasan_check_range+0x10f/0x1f0 __asan_memcpy+0x3c/0x60 smb2_set_next_command.cold+0x1d6/0x24c [cifs] smb2_compound_op+0x238c/0x3840 [cifs] ? kasan_save_track+0x14/0x30 ? kasan_save_free_info+0x3b/0x70 ? vfs_symlink+0x1a1/0x2c0 ? do_symlinkat+0x108/0x1c0 ? __pfx_smb2_compound_op+0x10/0x10 [cifs] ? kmem_cache_free+0x118/0x3e0 ? cifs_get_writable_path+0xeb/0x1a0 [cifs] smb2_get_reparse_inode+0x423/0x540 [cifs] ? __pfx_smb2_get_reparse_inode+0x10/0x10 [cifs] ? rcu_is_watching+0x20/0x50 ? __kmalloc_noprof+0x37c/0x480 ? smb2_create_reparse_symlink+0x257/0x490 [cifs] ? smb2_create_reparse_symlink+0x38f/0x490 [cifs] smb2_create_reparse_symlink+0x38f/0x490 [cifs] ? __pfx_smb2_create_reparse_symlink+0x10/0x10 [cifs] ? find_held_lock+0x8a/0xa0 ? hlock_class+0x32/0xb0 ? __build_path_from_dentry_optional_prefix+0x19d/0x2e0 [cifs] cifs_symlink+0x24f/0x960 [cifs] ? __pfx_make_vfsuid+0x10/0x10 ? __pfx_cifs_symlink+0x10/0x10 [cifs] ? make_vfsgid+0x6b/0xc0 ? generic_permission+0x96/0x2d0 vfs_symlink+0x1a1/0x2c0 do_symlinkat+0x108/0x1c0 ? __pfx_do_symlinkat+0x10/0x10 ? strncpy_from_user+0xaa/0x160 __x64_sys_symlinkat+0xb9/0xf0 do_syscall_64+0xbb/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08d75c13bb
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ab60323c5201bef25f2a3dc0ccc404d9aca77f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ef632bfb888d1a14f81c1703817951e0bec5531Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f0516ef1290da24b85461ed08a0938af7415e49Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b209c3a0bc3ac172265c7fa8309e5d00654f2510Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e07d05b7f5ad9a503d9cab0afde2ab867bb65470Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed31aba8ce93472d9e16f5cff844ae7c94e9601dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe92ddc1c32d4474e605e3a31a4afcd0e7d765ecPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-265688.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.170",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "624D9A7E-BE56-498C-AB49-4DF81EB85011",
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              "versionStartIncluding": "5.0",
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            {
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              "matchCriteriaId": "C08A77A6-E42E-4EFD-B5A1-2BF6CBBB42AE",
              "versionEndExcluding": "6.1.115",
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            {
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1",
              "versionEndExcluding": "6.11.6",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix OOBs when building SMB2_IOCTL request\n\nWhen using encryption, either enforced by the server or when using\n\u0027seal\u0027 mount option, the client will squash all compound request buffers\ndown for encryption into a single iov in smb2_set_next_command().\n\nSMB2_ioctl_init() allocates a small buffer (448 bytes) to hold the\nSMB2_IOCTL request in the first iov, and if the user passes an input\nbuffer that is greater than 328 bytes, smb2_set_next_command() will\nend up writing off the end of @rqst-\u003eiov[0].iov_base as shown below:\n\n  mount.cifs //srv/share /mnt -o ...,seal\n  ln -s $(perl -e \"print(\u0027a\u0027)for 1..1024\") /mnt/link\n\n  BUG: KASAN: slab-out-of-bounds in\n  smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n  Write of size 4116 at addr ffff8881148fcab8 by task ln/859\n\n  CPU: 1 UID: 0 PID: 859 Comm: ln Not tainted 6.12.0-rc3 #1\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\n  1.16.3-2.fc40 04/01/2014\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x5d/0x80\n   ? smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n   print_report+0x156/0x4d9\n   ? smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n   ? __virt_addr_valid+0x145/0x310\n   ? __phys_addr+0x46/0x90\n   ? smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n   kasan_report+0xda/0x110\n   ? smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n   kasan_check_range+0x10f/0x1f0\n   __asan_memcpy+0x3c/0x60\n   smb2_set_next_command.cold+0x1d6/0x24c [cifs]\n   smb2_compound_op+0x238c/0x3840 [cifs]\n   ? kasan_save_track+0x14/0x30\n   ? kasan_save_free_info+0x3b/0x70\n   ? vfs_symlink+0x1a1/0x2c0\n   ? do_symlinkat+0x108/0x1c0\n   ? __pfx_smb2_compound_op+0x10/0x10 [cifs]\n   ? kmem_cache_free+0x118/0x3e0\n   ? cifs_get_writable_path+0xeb/0x1a0 [cifs]\n   smb2_get_reparse_inode+0x423/0x540 [cifs]\n   ? __pfx_smb2_get_reparse_inode+0x10/0x10 [cifs]\n   ? rcu_is_watching+0x20/0x50\n   ? __kmalloc_noprof+0x37c/0x480\n   ? smb2_create_reparse_symlink+0x257/0x490 [cifs]\n   ? smb2_create_reparse_symlink+0x38f/0x490 [cifs]\n   smb2_create_reparse_symlink+0x38f/0x490 [cifs]\n   ? __pfx_smb2_create_reparse_symlink+0x10/0x10 [cifs]\n   ? find_held_lock+0x8a/0xa0\n   ? hlock_class+0x32/0xb0\n   ? __build_path_from_dentry_optional_prefix+0x19d/0x2e0 [cifs]\n   cifs_symlink+0x24f/0x960 [cifs]\n   ? __pfx_make_vfsuid+0x10/0x10\n   ? __pfx_cifs_symlink+0x10/0x10 [cifs]\n   ? make_vfsgid+0x6b/0xc0\n   ? generic_permission+0x96/0x2d0\n   vfs_symlink+0x1a1/0x2c0\n   do_symlinkat+0x108/0x1c0\n   ? __pfx_do_symlinkat+0x10/0x10\n   ? strncpy_from_user+0xaa/0x160\n   __x64_sys_symlinkat+0xb9/0xf0\n   do_syscall_64+0xbb/0x1d0\n   entry_SYSCALL_64_after_hwframe+0x77/0x7f\n  RIP: 0033:0x7f08d75c13bb"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corregir OOB al crear una solicitud SMB2_IOCTL Al usar cifrado, ya sea aplicado por el servidor o al usar la opci\u00f3n de montaje \u0027seal\u0027, el cliente comprimir\u00e1 todos los buffers de solicitud compuestos para el cifrado en un solo iov en smb2_set_next_command(). SMB2_ioctl_init() asigna un peque\u00f1o b\u00fafer (448 bytes) para contener la solicitud SMB2_IOCTL en el primer iov, y si el usuario pasa un b\u00fafer de entrada que es mayor a 328 bytes, smb2_set_next_command() terminar\u00e1 escribiendo el final de @rqst-\u0026gt;iov[0].iov_base como se muestra a continuaci\u00f3n: mount.cifs //srv/share /mnt -o ...,seal ln -s $(perl -e \"print(\u0027a\u0027)for 1..1024\") /mnt/link ERROR: KASAN: slab-out-of-bounds en smb2_set_next_command.cold+0x1d6/0x24c [cifs] Escritura de tama\u00f1o 4116 en la direcci\u00f3n ffff8881148fcab8 por tarea ln/859 CPU: 1 UID: 0 PID: 859 Comm: ln No contaminado 6.12.0-rc3 #1 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl+0x5d/0x80 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] print_report+0x156/0x4d9 ? smb2_set_next_command.cold+0x1d6/0x24c [cifs] ? __virt_addr_valid+0x145/0x310 ? __phys_addr+0x46/0x90 ? vfs_symlink+0x1a1/0x2c0 ? __pfx_smb2_compound_op+0x10/0x10 [cifs] ? kmem_cache_free+0x118/0x3e0 ? cifs_get_writable_path+0xeb/0x1a0 [cifs] ? smb2_get_reparse_inode+0x423/0x540 [cifs] ? __pfx_smb2_get_reparse_inode+0x10/0x10 [cifs] ? rcu_is_watching+0x20/0x50 ? __kmalloc_noprof+0x37c/0x480 ? smb2_create_reparse_symlink+0x257/0x490 [cifs] ? __pfx_smb2_create_reparse_symlink+0x10/0x10 [cifs] ? __pfx_smb2_create_reparse_symlink+0x10/0x10 [cifs] ? __buscar_bloqueo_mantenido+0x8a/0xa0 ? __hlock_class+0x32/0xb0 ? __ruta_de_compilaci\u00f3n_desde_dentry_prefijo_opcional+0x19d/0x2e0 [cifs] ? __pfx_make_vfsuid+0x10/0x10 ? __pfx_cifs_symlink+0x10/0x10 [cifs] ? make_vfsgid+0x6b/0xc0 ? permiso_gen\u00e9rico+0x96/0x2d0 vfs_symlink+0x1a1/0x2c0 do_symlinkat+0x108/0x1c0 ? __pfx_do_symlinkat+0x10/0x10 ? strncpy_from_user+0xaa/0x160 __x64_sys_symlinkat+0xb9/0xf0 do_syscall_64+0xbb/0x1d0 entrada_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08d75c13bb"
    }
  ],
  "id": "CVE-2024-50151",
  "lastModified": "2026-06-17T08:03:43.410",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-50151",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-01T20:20:44.094146Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-11-07T10:15:06.780",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1ab60323c5201bef25f2a3dc0ccc404d9aca77f1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2ef632bfb888d1a14f81c1703817951e0bec5531"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6f0516ef1290da24b85461ed08a0938af7415e49"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b209c3a0bc3ac172265c7fa8309e5d00654f2510"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e07d05b7f5ad9a503d9cab0afde2ab867bb65470"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ed31aba8ce93472d9e16f5cff844ae7c94e9601d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.