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CVE-2024-50151 (GCVE-0-2024-50151)

Vulnerability from cvelistv5 – Published: 2024-11-07 09:31 – Updated: 2026-08-05 11:42
VLAI
Title
smb: client: fix OOBs when building SMB2_IOCTL request
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
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:20 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < 6f0516ef1290da24b85461ed08a0938af7415e49 (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < ed31aba8ce93472d9e16f5cff844ae7c94e9601d (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < e07d05b7f5ad9a503d9cab0afde2ab867bb65470 (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < 2ef632bfb888d1a14f81c1703817951e0bec5531 (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < b209c3a0bc3ac172265c7fa8309e5d00654f2510 (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec (git)
Affected: e77fe73c7e38c36145825d84cfe385d400aba4fd , < 1ab60323c5201bef25f2a3dc0ccc404d9aca77f1 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.229 , ≤ 5.10.* (semver)
Unaffected: 5.15.170 , ≤ 5.15.* (semver)
Unaffected: 6.1.115 , ≤ 6.1.* (semver)
Unaffected: 6.6.59 , ≤ 6.6.* (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
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          "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"
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              "lang": "en",
              "value": "AV:L - The overflow is triggered by a local syscall (`symlinkat(2)`) on a mounted CIFS share, where the oversized input data originates from the local user\u0027s symlink target, not from network-received data. A remote SMB server can only supply the encryption precondition, so the exploitation primitive itself is reached locally.\nAC:L - A single `ln -s` with a target longer than ~82 characters deterministically overflows the 448-byte request buffer, with the attacker choosing both the overflow length and its contents. The only precondition is SMB3 encryption, which is standard in enterprise/Azure Files deployments (or forced by the server) and requires no race or layout luck.\nPR:L - Any unprivileged local user with write access to a directory on the CIFS mount can create a symlink; no capability is checked anywhere on the `cifs_symlink -\u003e smb2_create_reparse_symlink -\u003e SMB2_ioctl_init` path. Only the far less reachable `CIFS_IOCTL_QUERY_INFO` variant needs CAP_SYS_ADMIN.\nUI:N - The attacker performs the symlink creation themselves on an already-mounted share; no action by any other user is needed at exploitation time.\nS:U - The heap corruption stays within the kernel\u0027s own memory and security authority, giving at most kernel privilege escalation rather than crossing a VM, sandbox, or IOMMU boundary.\nC:H - A multi-kilobyte slab overflow overwrites adjacent SMB request/response buffers and neighbouring heap objects, allowing corruption of length/offset fields and other metadata that can be leveraged into kernel memory disclosure (including data subsequently transmitted to the server).\nI:H - This is an out-of-bounds write with attacker-controlled size (up to several KB) and largely attacker-controlled content, i.e. a controllable heap-corruption primitive that can overwrite adjacent kernel objects and be leveraged for arbitrary write and control-flow hijacking.\nA:H - The KASAN-confirmed slab-out-of-bounds write of 4116 bytes into a 448-byte object destroys adjacent slab objects and metadata, reliably producing kernel oops/panic, and it can be repeated at will by an unprivileged user."
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      "status": "final",
      "title": "smb: client: fix OOBs when building SMB2_IOCTL request",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50151.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50151\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-07T10:15:06.780\",\"lastModified\":\"2026-06-17T08:03:43.410\",\"vulnStatus\":\"Modified\",\"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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/smb/client/smb2pdu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"6f0516ef1290da24b85461ed08a0938af7415e49\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"ed31aba8ce93472d9e16f5cff844ae7c94e9601d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"e07d05b7f5ad9a503d9cab0afde2ab867bb65470\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"2ef632bfb888d1a14f81c1703817951e0bec5531\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"b209c3a0bc3ac172265c7fa8309e5d00654f2510\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\"lessThan\":\"1ab60323c5201bef25f2a3dc0ccc404d9aca77f1\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/smb/client/smb2pdu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.285\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.229\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.170\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.115\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.59\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.6\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux 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Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0\",\"versionEndExcluding\":\"5.4.285\",\"matchCriteriaId\":\"624D9A7E-BE56-498C-AB49-4DF81EB85011\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.229\",\"matchCriteriaId\":\"1A03CABE-9B43-4E7F-951F-10DEEADAA426\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.170\",\"matchCriteriaId\":\"A9BA1C73-2D2E-45E3-937B-276A28AEB5FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.115\",\"matchCriteriaId\":\"C08A77A6-E42E-4EFD-B5A1-2BF6CBBB42AE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.59\",\"matchCriteriaId\":\"5D15CA59-D15C-4ACD-8B03-A072DEAD2081\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.6\",\"matchCriteriaId\":\"E4486B12-007B-4794-9857-F07145637AA1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}]}]}],\"references\":[{\"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\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"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\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:42:16+00:00",
      "cve": "CVE-2024-50151",
      "id": "CVE-2024-50151",
      "initial_release_date": "2024-11-07T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: smb: client: fix OOBs when building SMB2_IOCTL request",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50151.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:26:10.332Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T12:00:23.831Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50151\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:20:44.094146Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-787\", \"description\": \"CWE-787 Out-of-bounds Write\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:17:56.350Z\"}}], \"cna\": {\"title\": \"smb: client: fix OOBs when building SMB2_IOCTL request\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"6f0516ef1290da24b85461ed08a0938af7415e49\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"ed31aba8ce93472d9e16f5cff844ae7c94e9601d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"e07d05b7f5ad9a503d9cab0afde2ab867bb65470\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"2ef632bfb888d1a14f81c1703817951e0bec5531\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"b209c3a0bc3ac172265c7fa8309e5d00654f2510\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\", \"lessThan\": \"1ab60323c5201bef25f2a3dc0ccc404d9aca77f1\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/smb/client/smb2pdu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.229\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.170\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.115\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.59\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/smb/client/smb2pdu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6f0516ef1290da24b85461ed08a0938af7415e49\"}, {\"url\": \"https://git.kernel.org/stable/c/ed31aba8ce93472d9e16f5cff844ae7c94e9601d\"}, {\"url\": \"https://git.kernel.org/stable/c/e07d05b7f5ad9a503d9cab0afde2ab867bb65470\"}, {\"url\": \"https://git.kernel.org/stable/c/2ef632bfb888d1a14f81c1703817951e0bec5531\"}, {\"url\": \"https://git.kernel.org/stable/c/b209c3a0bc3ac172265c7fa8309e5d00654f2510\"}, {\"url\": \"https://git.kernel.org/stable/c/fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec\"}, {\"url\": \"https://git.kernel.org/stable/c/1ab60323c5201bef25f2a3dc0ccc404d9aca77f1\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.229\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.170\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.115\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.59\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.6\", \"versionStartIncluding\": \"5.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"5.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:46:25.825Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50151\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T12:00:23.831Z\", \"dateReserved\": \"2024-10-21T19:36:19.959Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-07T09:31:27.672Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.