CVE-2023-52866

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> HID: uclogic: Fix user-memory-access bug in uclogic_params_ugee_v2_init_event_hooks()<br /> <br /> When CONFIG_HID_UCLOGIC=y and CONFIG_KUNIT_ALL_TESTS=y, launch kernel and<br /> then the below user-memory-access bug occurs.<br /> <br /> In hid_test_uclogic_params_cleanup_event_hooks(),it call<br /> uclogic_params_ugee_v2_init_event_hooks() with the first arg=NULL, so<br /> when it calls uclogic_params_ugee_v2_has_battery(), the hid_get_drvdata()<br /> will access hdev-&gt;dev with hdev=NULL, which will cause below<br /> user-memory-access.<br /> <br /> So add a fake_device with quirks member and call hid_set_drvdata()<br /> to assign hdev-&gt;dev-&gt;driver_data which avoids the null-ptr-def bug<br /> for drvdata-&gt;quirks in uclogic_params_ugee_v2_has_battery(). After applying<br /> this patch, the below user-memory-access bug never occurs.<br /> <br /> general protection fault, probably for non-canonical address 0xdffffc0000000329: 0000 [#1] PREEMPT SMP KASAN<br /> KASAN: probably user-memory-access in range [0x0000000000001948-0x000000000000194f]<br /> CPU: 5 PID: 2189 Comm: kunit_try_catch Tainted: G B W N 6.6.0-rc2+ #30<br /> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014<br /> RIP: 0010:uclogic_params_ugee_v2_init_event_hooks+0x87/0x600<br /> Code: f3 f3 65 48 8b 14 25 28 00 00 00 48 89 54 24 60 31 d2 48 89 fa c7 44 24 30 00 00 00 00 48 c7 44 24 28 02 f8 02 01 48 c1 ea 03 3c 02 00 0f 85 2c 04 00 00 48 8b 9d 48 19 00 00 48 b8 00 00 00<br /> RSP: 0000:ffff88810679fc88 EFLAGS: 00010202<br /> RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000000<br /> RDX: 0000000000000329 RSI: ffff88810679fd88 RDI: 0000000000001948<br /> RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1020f639f0<br /> R10: ffff888107b1cf87 R11: 0000000000000400 R12: 1ffff11020cf3f92<br /> R13: ffff88810679fd88 R14: ffff888100b97b08 R15: ffff8881030bb080<br /> FS: 0000000000000000(0000) GS:ffff888119e80000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 0000000000000000 CR3: 0000000005286001 CR4: 0000000000770ee0<br /> DR0: ffffffff8fdd6cf4 DR1: ffffffff8fdd6cf5 DR2: ffffffff8fdd6cf6<br /> DR3: ffffffff8fdd6cf7 DR6: 00000000fffe0ff0 DR7: 0000000000000600<br /> PKRU: 55555554<br /> Call Trace:<br /> <br /> ? die_addr+0x3d/0xa0<br /> ? exc_general_protection+0x144/0x220<br /> ? asm_exc_general_protection+0x22/0x30<br /> ? uclogic_params_ugee_v2_init_event_hooks+0x87/0x600<br /> ? sched_clock_cpu+0x69/0x550<br /> ? uclogic_parse_ugee_v2_desc_gen_params+0x70/0x70<br /> ? load_balance+0x2950/0x2950<br /> ? rcu_trc_cmpxchg_need_qs+0x67/0xa0<br /> hid_test_uclogic_params_cleanup_event_hooks+0x9e/0x1a0<br /> ? uclogic_params_ugee_v2_init_event_hooks+0x600/0x600<br /> ? __switch_to+0x5cf/0xe60<br /> ? migrate_enable+0x260/0x260<br /> ? __kthread_parkme+0x83/0x150<br /> ? kunit_try_run_case_cleanup+0xe0/0xe0<br /> kunit_generic_run_threadfn_adapter+0x4a/0x90<br /> ? kunit_try_catch_throw+0x80/0x80<br /> kthread+0x2b5/0x380<br /> ? kthread_complete_and_exit+0x20/0x20<br /> ret_from_fork+0x2d/0x70<br /> ? kthread_complete_and_exit+0x20/0x20<br /> ret_from_fork_asm+0x11/0x20<br /> <br /> Modules linked in:<br /> Dumping ftrace buffer:<br /> (ftrace buffer empty)<br /> ---[ end trace 0000000000000000 ]---<br /> RIP: 0010:uclogic_params_ugee_v2_init_event_hooks+0x87/0x600<br /> Code: f3 f3 65 48 8b 14 25 28 00 00 00 48 89 54 24 60 31 d2 48 89 fa c7 44 24 30 00 00 00 00 48 c7 44 24 28 02 f8 02 01 48 c1 ea 03 3c 02 00 0f 85 2c 04 00 00 48 8b 9d 48 19 00 00 48 b8 00 00 00<br /> RSP: 0000:ffff88810679fc88 EFLAGS: 00010202<br /> RAX: dffffc0000000000 RBX: 0000000000000004 RCX: 0000000000000000<br /> RDX: 0000000000000329 RSI: ffff88810679fd88 RDI: 0000000000001948<br /> RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1020f639f0<br /> R10: ffff888107b1cf87 R11: 0000000000000400 R12: 1ffff11020cf3f92<br /> R13: ffff88810679fd88 R14: ffff888100b97b08 R15: ffff8881030bb080<br /> FS: 0000000000000000(0000) GS:ffff888119e80000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 0000000000000000 CR3: 0000000005286001 CR4: 0000000000770ee0<br /> DR0: ffffffff8fdd6cf4 DR1: <br /> ---truncated---