CVE-2022-50772

In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix memory leak in nsim_bus_dev_new() If device_register() failed in nsim_bus_dev_new(), the value of reference in nsim_bus_dev->dev is 1. obj->name in nsim_bus_dev->dev will not be released. unreferenced object 0xffff88810352c480 (size 16): comm "echo", pid 5691, jiffies 4294945921 (age 133.270s) hex dump (first 16 bytes): 6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00 netdevsim1...... backtrace: [ ] __kmalloc_node_track_caller+0x3a/0xb0 [ ] kvasprintf+0xc3/0x160 [ ] kvasprintf_const+0x55/0x180 [ ] kobject_set_name_vargs+0x56/0x150 [ ] dev_set_name+0xbb/0xf0 [ ] device_add+0x1f8/0x1cb0 [ ] new_device_store+0x3b6/0x5e0 [ ] bus_attr_store+0x72/0xa0 [ ] sysfs_kf_write+0x106/0x160 [ ] kernfs_fop_write_iter+0x3a8/0x5a0 [ ] vfs_write+0x8f0/0xc80 [ ] ksys_write+0x106/0x210 [ ] do_syscall_64+0x35/0x80 [ ] entry_SYSCALL_64_after_hwframe+0x46/0xb0