In the Linux kernel, the following vulnerability has been resolved:
media: bcm2835-unicam: Fix asc leaked in error/remove path
v4l2_async_nf_add_fwnode_remote() allocates the asc, which is freed when
v4l2_async_nf_cleanup() is called.
Call v4l2_async_nf_cleanup() properly in the driver paths.
Discovered with kmemleak after rmmod:
unreferenced object 0xffff000084526b80 (size 64):
comm “modprobe”, pid 185, jiffies 4295013512
hex dump (first 32 bytes):
01 00 00 00 00 00 00 00 e8 0d ff bf 00 00 ff ff …………….
40 83 bc 84 00 00 ff ff 60 83 bc 84 00 00 ff ff @…….`…….
backtrace (crc ac584083):
[] kmemleak_alloc+0x38/0x44
[] __kmalloc+0x1b0/0x250
[] __v4l2_async_nf_add_fwnode+0x28/0x9c
[] __v4l2_async_nf_add_fwnode_remote+0x3c/0x64
