CVE-2022-48995

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Input: raydium_ts_i2c - fix memory leak in raydium_i2c_send()<br /> <br /> There is a kmemleak when test the raydium_i2c_ts with bpf mock device:<br /> <br /> unreferenced object 0xffff88812d3675a0 (size 8):<br /> comm "python3", pid 349, jiffies 4294741067 (age 95.695s)<br /> hex dump (first 8 bytes):<br /> 11 0e 10 c0 01 00 04 00 ........<br /> backtrace:<br /> [] __kmalloc+0x46/0x1b0<br /> [] raydium_i2c_send+0xd4/0x2bf [raydium_i2c_ts]<br /> [] raydium_i2c_initialize.cold+0xbc/0x3e4 [raydium_i2c_ts]<br /> [] raydium_i2c_probe+0x3cd/0x6bc [raydium_i2c_ts]<br /> [] i2c_device_probe+0x651/0x680<br /> [] really_probe+0x17c/0x3f0<br /> [] __driver_probe_device+0xe3/0x170<br /> [] driver_probe_device+0x49/0x120<br /> [] __device_attach_driver+0xf7/0x150<br /> [] bus_for_each_drv+0x114/0x180<br /> [] __device_attach+0x1e5/0x2d0<br /> [] bus_probe_device+0x126/0x140<br /> [] device_add+0x810/0x1130<br /> [] i2c_new_client_device+0x352/0x4e0<br /> [] of_i2c_register_device+0xf1/0x110<br /> [] of_i2c_notify+0x100/0x160<br /> unreferenced object 0xffff88812d3675c8 (size 8):<br /> comm "python3", pid 349, jiffies 4294741070 (age 95.692s)<br /> hex dump (first 8 bytes):<br /> 22 00 36 2d 81 88 ff ff ".6-....<br /> backtrace:<br /> [] __kmalloc+0x46/0x1b0<br /> [] raydium_i2c_send+0xd4/0x2bf [raydium_i2c_ts]<br /> [] raydium_i2c_initialize.cold+0x223/0x3e4 [raydium_i2c_ts]<br /> [] raydium_i2c_probe+0x3cd/0x6bc [raydium_i2c_ts]<br /> [] i2c_device_probe+0x651/0x680<br /> [] really_probe+0x17c/0x3f0<br /> [] __driver_probe_device+0xe3/0x170<br /> [] driver_probe_device+0x49/0x120<br /> [] __device_attach_driver+0xf7/0x150<br /> [] bus_for_each_drv+0x114/0x180<br /> [] __device_attach+0x1e5/0x2d0<br /> [] bus_probe_device+0x126/0x140<br /> [] device_add+0x810/0x1130<br /> [] i2c_new_client_device+0x352/0x4e0<br /> [] of_i2c_register_device+0xf1/0x110<br /> [] of_i2c_notify+0x100/0x160<br /> <br /> After BANK_SWITCH command from i2c BUS, no matter success or error<br /> happened, the tx_buf should be freed.