CVE-2026-90175

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CVE-2026-90175
In the Linux kernel, the following vulnerability has been resolved:

smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer

Free it unconditionally after ksmbd_alloc_user() calls.

kmemleak splat:
unreferenced object 0xffff888103b83540 (size 192):
comm "pool-0", pid 16970, jiffies 4377290937
hex dump (first 32 bytes):
00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 408ccc66):
__kvmalloc_node_noprof+0x730/0x920
handle_generic_event+0xec/0x1a0 [ksmbd]
genl_family_rcv_msg_doit+0xe0/0x130
genl_rcv_msg+0x181/0x290
netlink_rcv_skb+0x4f/0x100
genl_rcv+0x28/0x40
netlink_unicast+0x1e6/0x2c0
netlink_sendmsg+0x20a/0x450
____sys_sendmsg+0x2e8/0x310
___sys_sendmsg+0x78/0xc0
__sys_sendmsg+0x63/0xc0
do_syscall_64+0xa1/0x670
entry_SYSCALL_64_after_hwframe+0x76/0x7e