CVE-2023-54203
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr When smb1 mount fails, KASAN detect slab-out-of-bounds in init_smb2_rsp_hdr like the following one. For smb1 negotiate(56bytes) , init_smb2_rsp_hdr() for smb2 is called. The issue occurs while handling smb1 negotiate as smb2 server operations. Add smb server operations for smb1 (get_cmd_val, init_rsp_hdr, allocate_rsp_buf, check_user_session) to handle smb1 negotiate so that smb2 server operation does not handle it. [ 411.400423] CIFS: VFS: Use of the less secure dialect vers=1.0 is not recommended unless required for access to very old servers [ 411.400452] CIFS: Attempting to mount \\192.168.45.139\homes [ 411.479312] ksmbd: init_smb2_rsp_hdr : 492 [ 411.479323] ================================================================== [ 411.479327] BUG: KASAN: slab-out-of-bounds in init_smb2_rsp_hdr+0x1e2/0x1f4 [ksmbd] [ 411.479369] Read of size 16 at addr ffff888488ed0734 by task kworker/14:1/199 [ 411.479379] CPU: 14 PID: 199 Comm: kworker/14:1 Tainted: G OE 6.1.21 #3 [ 411.479386] Hardware name: ASUSTeK COMPUTER INC. Z10PA-D8 Series/Z10PA-D8 Series, BIOS 3801 08/23/2019 [ 411.479390] Workqueue: ksmbd-io handle_ksmbd_work [ksmbd] [ 411.479425] Call Trace: [ 411.479428] <TASK> [ 411.479432] dump_stack_lvl+0x49/0x63 [ 411.479444] print_report+0x171/0x4a8 [ 411.479452] ? kasan_complete_mode_report_info+0x3c/0x200 [ 411.479463] ? init_smb2_rsp_hdr+0x1e2/0x1f4 [ksmbd] [ 411.479497] kasan_report+0xb4/0x130 [ 411.479503] ? init_smb2_rsp_hdr+0x1e2/0x1f4 [ksmbd] [ 411.479537] kasan_check_range+0x149/0x1e0 [ 411.479543] memcpy+0x24/0x70 [ 411.479550] init_smb2_rsp_hdr+0x1e2/0x1f4 [ksmbd] [ 411.479585] handle_ksmbd_work+0x109/0x760 [ksmbd] [ 411.479616] ? _raw_spin_unlock_irqrestore+0x50/0x50 [ 411.479624] ? smb3_encrypt_resp+0x340/0x340 [ksmbd] [ 411.479656] process_one_work+0x49c/0x790 [ 411.479667] worker_thread+0x2b1/0x6e0 [ 411.479674] ? process_one_work+0x790/0x790 [ 411.479680] kthread+0x177/0x1b0 [ 411.479686] ? kthread_complete_and_exit+0x30/0x30 [ 411.479692] ret_from_fork+0x22/0x30 [ 411.479702] </TASK>
How to fix
- Linux Linux921536046bd165efeb07beef5630aff35cd6a489, a8334a0c535d0f0b4d64926c8fe0922ed98f7d43, 99a51c673b1d2d0b5a972353401b77612d9cc713, dc8289f912387c3bcfbc5d2db29c8947fa207c11, 5.15.145, 6.1.24, 6.2.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 51a8534c0f35c0401e45f1055f914729cad98bf9 ≤ v < 921536046bd165efeb07beef5630aff35cd6a489, 0b3ec5671ac06829ccebdaeec05acedfec327f42 ≤ v < a8334a0c535d0f0b4d64926c8fe0922ed98f7d43, cc32cd98a0aee4cc3eb611cbce11795b1aaa738a ≤ v < 99a51c673b1d2d0b5a972353401b77612d9cc713, 39b291b86b5988bf8753c3874d5c773399d09b96 ≤ v < dc8289f912387c3bcfbc5d2db29c8947fa207c11, 5.15.105 ≤ v < 5.15.145, 6.1.22 ≤ v < 6.1.24, 6.2.9 ≤ v < 6.2.11 | 921536046bd165efeb07beef5630aff35cd6a489, a8334a0c535d0f0b4d64926c8fe0922ed98f7d43, 99a51c673b1d2d0b5a972353401b77612d9cc713, dc8289f912387c3bcfbc5d2db29c8947fa207c11, 5.15.145, 6.1.24, 6.2.11 |
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