TLDRVuln - Cybersecurity Vulnerabilities Made Simple

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:

[<000000005e2e5e26>] __kmalloc_node_track_caller+0x3a/0xb0

[<0000000094ca4fc8>] kvasprintf+0xc3/0x160

[<00000000aad09bcc>] kvasprintf_const+0x55/0x180

[<000000009bac868d>] kobject_set_name_vargs+0x56/0x150

[<000000007c1a5d70>] dev_set_name+0xbb/0xf0

[<00000000ad0d126b>] device_add+0x1f8/0x1cb0

[<00000000c222ae24>] new_device_store+0x3b6/0x5e0

[<0000000043593421>] bus_attr_store+0x72/0xa0

[<00000000cbb1833a>] sysfs_kf_write+0x106/0x160

[<00000000d0dedb8a>] kernfs_fop_write_iter+0x3a8/0x5a0

[<00000000770b66e2>] vfs_write+0x8f0/0xc80

[<0000000078bb39be>] ksys_write+0x106/0x210

[<00000000005e55a4>] do_syscall_64+0x35/0x80

[<00000000eaa40bbc>] entry_SYSCALL_64_after_hwframe+0x46/0xb0