{"id":"CVE-2025-38179","summary":"smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()\n\nThis fixes the following problem:\n\n[  749.901015] [   T8673] run fstests cifs/001 at 2025-06-17 09:40:30\n[  750.346409] [   T9870] ==================================================================\n[  750.346814] [   T9870] BUG: KASAN: slab-out-of-bounds in smb_set_sge+0x2cc/0x3b0 [cifs]\n[  750.347330] [   T9870] Write of size 8 at addr ffff888011082890 by task xfs_io/9870\n[  750.347705] [   T9870]\n[  750.348077] [   T9870] CPU: 0 UID: 0 PID: 9870 Comm: xfs_io Kdump: loaded Not tainted 6.16.0-rc2-metze.02+ #1 PREEMPT(voluntary)\n[  750.348082] [   T9870] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006\n[  750.348085] [   T9870] Call Trace:\n[  750.348086] [   T9870]  \u003cTASK\u003e\n[  750.348088] [   T9870]  dump_stack_lvl+0x76/0xa0\n[  750.348106] [   T9870]  print_report+0xd1/0x640\n[  750.348116] [   T9870]  ? __pfx__raw_spin_lock_irqsave+0x10/0x10\n[  750.348120] [   T9870]  ? kasan_complete_mode_report_info+0x26/0x210\n[  750.348124] [   T9870]  kasan_report+0xe7/0x130\n[  750.348128] [   T9870]  ? smb_set_sge+0x2cc/0x3b0 [cifs]\n[  750.348262] [   T9870]  ? smb_set_sge+0x2cc/0x3b0 [cifs]\n[  750.348377] [   T9870]  __asan_report_store8_noabort+0x17/0x30\n[  750.348381] [   T9870]  smb_set_sge+0x2cc/0x3b0 [cifs]\n[  750.348496] [   T9870]  smbd_post_send_iter+0x1990/0x3070 [cifs]\n[  750.348625] [   T9870]  ? __pfx_smbd_post_send_iter+0x10/0x10 [cifs]\n[  750.348741] [   T9870]  ? update_stack_state+0x2a0/0x670\n[  750.348749] [   T9870]  ? cifs_flush+0x153/0x320 [cifs]\n[  750.348870] [   T9870]  ? cifs_flush+0x153/0x320 [cifs]\n[  750.348990] [   T9870]  ? update_stack_state+0x2a0/0x670\n[  750.348995] [   T9870]  smbd_send+0x58c/0x9c0 [cifs]\n[  750.349117] [   T9870]  ? __pfx_smbd_send+0x10/0x10 [cifs]\n[  750.349231] [   T9870]  ? unwind_get_return_address+0x65/0xb0\n[  750.349235] [   T9870]  ? __pfx_stack_trace_consume_entry+0x10/0x10\n[  750.349242] [   T9870]  ? arch_stack_walk+0xa7/0x100\n[  750.349250] [   T9870]  ? stack_trace_save+0x92/0xd0\n[  750.349254] [   T9870]  __smb_send_rqst+0x931/0xec0 [cifs]\n[  750.349374] [   T9870]  ? kernel_text_address+0x173/0x190\n[  750.349379] [   T9870]  ? kasan_save_stack+0x39/0x70\n[  750.349382] [   T9870]  ? kasan_save_track+0x18/0x70\n[  750.349385] [   T9870]  ? __kasan_slab_alloc+0x9d/0xa0\n[  750.349389] [   T9870]  ? __pfx___smb_send_rqst+0x10/0x10 [cifs]\n[  750.349508] [   T9870]  ? smb2_mid_entry_alloc+0xb4/0x7e0 [cifs]\n[  750.349626] [   T9870]  ? cifs_call_async+0x277/0xb00 [cifs]\n[  750.349746] [   T9870]  ? cifs_issue_write+0x256/0x610 [cifs]\n[  750.349867] [   T9870]  ? netfs_do_issue_write+0xc2/0x340 [netfs]\n[  750.349900] [   T9870]  ? netfs_advance_write+0x45b/0x1270 [netfs]\n[  750.349929] [   T9870]  ? netfs_write_folio+0xd6c/0x1be0 [netfs]\n[  750.349958] [   T9870]  ? netfs_writepages+0x2e9/0xa80 [netfs]\n[  750.349987] [   T9870]  ? do_writepages+0x21f/0x590\n[  750.349993] [   T9870]  ? filemap_fdatawrite_wbc+0xe1/0x140\n[  750.349997] [   T9870]  ? entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  750.350002] [   T9870]  smb_send_rqst+0x22e/0x2f0 [cifs]\n[  750.350131] [   T9870]  ? __pfx_smb_send_rqst+0x10/0x10 [cifs]\n[  750.350255] [   T9870]  ? local_clock_noinstr+0xe/0xd0\n[  750.350261] [   T9870]  ? kasan_save_alloc_info+0x37/0x60\n[  750.350268] [   T9870]  ? __kasan_check_write+0x14/0x30\n[  750.350271] [   T9870]  ? _raw_spin_lock+0x81/0xf0\n[  750.350275] [   T9870]  ? __pfx__raw_spin_lock+0x10/0x10\n[  750.350278] [   T9870]  ? smb2_setup_async_request+0x293/0x580 [cifs]\n[  750.350398] [   T9870]  cifs_call_async+0x477/0xb00 [cifs]\n[  750.350518] [   T9870]  ? __pfx_smb2_writev_callback+0x10/0x10 [cifs]\n[  750.350636] [   T9870]  ? __pfx_cifs_call_async+0x10/0x10 [cifs]\n[  750.350756] [   T9870]  ? __pfx__raw_spin_lock+0x10/0x10\n[  750.350760] [   T9870]  ? __kasan_check_write+0x14/0x30\n[  750.350763] [   T98\n---truncated---","modified":"2026-04-02T12:47:51.251481Z","published":"2025-07-04T13:37:07.383Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38179.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/8ae7814589d7bd850294ac14ec4c1725dafd42ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a379a8a2a0032e12e7ef397197c9c2ad011588d6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0ba9b2f188166550296005e64b15e80db82ad8a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38179.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38179"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c45ebd636c32d33c75e51ce977520ff146bd41a1"},{"fixed":"8ae7814589d7bd850294ac14ec4c1725dafd42ca"},{"fixed":"e0ba9b2f188166550296005e64b15e80db82ad8a"},{"fixed":"a379a8a2a0032e12e7ef397197c9c2ad011588d6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38179.json"}}],"schema_version":"1.7.5"}