CVE-2023-52768 Information

Description

In the Linux kernel the following vulnerability has been resolved:

wifi: wilc1000: use vmm_table as array in wilc struct

Enabling KASAN and running some iperf tests raises some memory issues with vmm_table:

BUG: KASAN: slab-out-of-bounds in wilc_wlan_handle_txq+0x6ac/0xdb4 Write of size 4 at addr c3a61540 by task wlan0-tx/95

KASAN detects that we are writing data beyond range allocated to vmm_table. There is indeed a mismatch between the size passed to allocator in wilc_wlan_init and the range of possible indexes used later: allocation size is missing a multiplication by sizeof(u32)

Reference

https://git.kernel.org/stable/c/541b3757fd443a68ed8d25968eae511a8275e7c8 https://git.kernel.org/stable/c/4b0d6ddb6466d10df878a7787f175a0e4adc3e27 https://git.kernel.org/stable/c/6aaf7cd8bdfe245d3c9a8b48fe70c2011965948e https://git.kernel.org/stable/c/3ce1c2c3999b232258f7aabab311d47dda75605c https://git.kernel.org/stable/c/05ac1a198a63ad66bf5ae8b7321407c102d40ef3