CVE-2024-50151

{"id": "CVE-2024-50151", "metrics": {"cvssMetricV31": [{"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}]}, "published": "2024-11-07T10:15:06.780", "references": [{"url": "https://git.kernel.org/stable/c/1ab60323c5201bef25f2a3dc0ccc404d9aca77f1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2ef632bfb888d1a14f81c1703817951e0bec5531", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6f0516ef1290da24b85461ed08a0938af7415e49", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b209c3a0bc3ac172265c7fa8309e5d00654f2510", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e07d05b7f5ad9a503d9cab0afde2ab867bb65470", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ed31aba8ce93472d9e16f5cff844ae7c94e9601d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "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'seal' 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->iov[0].iov_base as shown below:\n\n mount.cifs //srv/share /mnt -o ...,seal\n ln -s $(perl -e \"print('a')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 <TASK>\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 'seal', 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-&gt;iov[0].iov_base como se muestra a continuaci\u00f3n: mount.cifs //srv/share /mnt -o ...,seal ln -s $(perl -e \"print('a')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"}], "lastModified": "2024-11-22T17:30:55.633", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "624D9A7E-BE56-498C-AB49-4DF81EB85011", "versionEndExcluding": "5.4.285", "versionStartIncluding": "5.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1A03CABE-9B43-4E7F-951F-10DEEADAA426", "versionEndExcluding": "5.10.229", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A9BA1C73-2D2E-45E3-937B-276A28AEB5FC", "versionEndExcluding": "5.15.170", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C08A77A6-E42E-4EFD-B5A1-2BF6CBBB42AE", "versionEndExcluding": "6.1.115", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5D15CA59-D15C-4ACD-8B03-A072DEAD2081", "versionEndExcluding": "6.6.59", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1", "versionEndExcluding": "6.11.6", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}