{"id":"CVE-2024-50151","revision":null,"records":[{"revision":"c7f67d06e38e497a9377ecd756357169","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-50151","aliases":[],"title":"smb: client: fix OOBs when building SMB2_IOCTL request","description":"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 \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","state":0,"publishedAt":"2024-11-07T09:31:27.672+00:00","modifiedAt":"2026-10-15T00:57:16.122+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/smb/client/smb2pdu.c\"\n ],\n \"versions\": [\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"6f0516ef1290da24b85461ed08a0938af7415e49\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"ed31aba8ce93472d9e16f5cff844ae7c94e9601d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"e07d05b7f5ad9a503d9cab0afde2ab867bb65470\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"2ef632bfb888d1a14f81c1703817951e0bec5531\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"b209c3a0bc3ac172265c7fa8309e5d00654f2510\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e77fe73c7e38c36145825d84cfe385d400aba4fd\",\n \"lessThan\": \"1ab60323c5201bef25f2a3dc0ccc404d9aca77f1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/smb/client/smb2pdu.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.0\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.285\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.229\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.170\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.115\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.59\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.11.6\",\n \"lessThanOrEqual\": \"6.11.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6f0516ef1290da24b85461ed08a0938af7415e49","https://git.kernel.org/stable/c/ed31aba8ce93472d9e16f5cff844ae7c94e9601d","https://git.kernel.org/stable/c/e07d05b7f5ad9a503d9cab0afde2ab867bb65470","https://git.kernel.org/stable/c/2ef632bfb888d1a14f81c1703817951e0bec5531","https://git.kernel.org/stable/c/b209c3a0bc3ac172265c7fa8309e5d00654f2510","https://git.kernel.org/stable/c/fe92ddc1c32d4474e605e3a31a4afcd0e7d765ec","https://git.kernel.org/stable/c/1ab60323c5201bef25f2a3dc0ccc404d9aca77f1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-50151","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-50151","identifiers":["CVE-2024-50151"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-7062dd6d7628421ab96b6fad5e9e5783","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T20:16:49.2041123+00:00","lastSuccessAt":"2026-11-09T20:16:49.199+00:00","error":"9 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T20:16:49.199+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13314,"expectedIdentifiers":13707,"failedIdentifiers":9},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. 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