Namjae Jeon fc6c6a3c32 ksmbd: fix out-of-bound read in parse_lease_state() ... This bug is in parse_lease_state, and it is caused by the missing check of `struct create_context`. When the ksmbd traverses the create_contexts, it doesn't check if the field of `NameOffset` and `Next` is valid, The KASAN message is following: [ 6.664323] BUG: KASAN: slab-out-of-bounds in parse_lease_state+0x7d/0x280 [ 6.664738] Read of size 2 at addr ffff888005c08988 by task kworker/0:3/103 ... [ 6.666644] Call Trace: [ 6.666796] <TASK> [ 6.666933] dump_stack_lvl+0x33/0x50 [ 6.667167] print_report+0xcc/0x620 [ 6.667903] kasan_report+0xae/0xe0 [ 6.668374] kasan_check_range+0x35/0x1b0 [ 6.668621] parse_lease_state+0x7d/0x280 [ 6.668868] smb2_open+0xbe8/0x4420 [ 6.675137] handle_ksmbd_work+0x282/0x820 Use smb2_find_context_vals() to find smb2 create request lease context. smb2_find_context_vals validate create context fields. Cc: stable@vger.kernel.org Reported-by: Chih-Yen Chang <cc85nod@gmail.com> Tested-by: Chih-Yen Chang <cc85nod@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>		2023-06-02 12:30:57 -05:00
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mgmt
asn1.c
asn1.h
auth.c
auth.h
connection.c
connection.h
crypto_ctx.c
crypto_ctx.h
glob.h
Kconfig
ksmbd_netlink.h
ksmbd_spnego_negtokeninit.asn1
ksmbd_spnego_negtokentarg.asn1
ksmbd_work.c
ksmbd_work.h
Makefile
misc.c
misc.h
ndr.c
ndr.h
nterr.h
ntlmssp.h
oplock.c	ksmbd: fix out-of-bound read in parse_lease_state()	2023-06-02 12:30:57 -05:00
oplock.h
server.c
server.h
smb2misc.c
smb2ops.c
smb2pdu.c	ksmbd: fix out-of-bound read in deassemble_neg_contexts()	2023-06-02 12:30:57 -05:00
smb2pdu.h
smb_common.c
smb_common.h
smbacl.c
smbacl.h
smbfsctl.h
smbstatus.h
transport_ipc.c
transport_ipc.h
transport_rdma.c
transport_rdma.h
transport_tcp.c
transport_tcp.h
unicode.c
unicode.h
uniupr.h
vfs_cache.c
vfs_cache.h
vfs.c	ksmbd: call putname after using the last component	2023-05-26 20:27:46 -05:00
vfs.h
xattr.h