Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Initialize the chan_stats array to zero The adapter->chan_stats[] array is initialized in mwifiex_init_channel_scan_gap() with vmalloc(), which doesn't zero out memory. The array is filled in mwifiex_update_chan_statistics() and then the user can query the data in mwifiex_cfg80211_dump_survey(). There are two potential issues here. What if the user calls mwifiex_cfg80211_dump_survey() before the data has been filled in. Also the mwifiex_update_chan_statistics() function doesn't necessarily initialize the whole array. Since the array was not initialized at the start that could result in an information leak. Also this array is pretty small. It's a maximum of 900 bytes so it's more appropriate to use kcalloc() instead vmalloc().
Product status
bf35443314acb43fa8a3f9f8046e14cbe178762b before 9eb0118b3470b4d2e4e3bbb1fc088b30c0285d65
bf35443314acb43fa8a3f9f8046e14cbe178762b before 05daef0442d28350a1a0d6d0e2cab4a7a91df475
bf35443314acb43fa8a3f9f8046e14cbe178762b before acdf26a912190fc6746e2a890d7d0338190527b4
bf35443314acb43fa8a3f9f8046e14cbe178762b before 32c124c9c03aa755cbaf60ef7f76afd918d47659
bf35443314acb43fa8a3f9f8046e14cbe178762b before 9df29aa5637d94d24f7c5f054ef4feaa7b766111
bf35443314acb43fa8a3f9f8046e14cbe178762b before 06616410a3e5e6cd1de5b7cbc668f1a7edeedad9
bf35443314acb43fa8a3f9f8046e14cbe178762b before 5285b7009dc1e09d5bb9e05fae82e1a807882dbc
bf35443314acb43fa8a3f9f8046e14cbe178762b before 0e20450829ca3c1dbc2db536391537c57a40fe0b
3.19
Any version before 3.19
5.4.299
5.10.243
5.15.192
6.1.151
6.6.105
6.12.46
6.16.6
6.17
References
git.kernel.org/...c/9eb0118b3470b4d2e4e3bbb1fc088b30c0285d65
git.kernel.org/...c/05daef0442d28350a1a0d6d0e2cab4a7a91df475
git.kernel.org/...c/acdf26a912190fc6746e2a890d7d0338190527b4
git.kernel.org/...c/32c124c9c03aa755cbaf60ef7f76afd918d47659
git.kernel.org/...c/9df29aa5637d94d24f7c5f054ef4feaa7b766111
git.kernel.org/...c/06616410a3e5e6cd1de5b7cbc668f1a7edeedad9
git.kernel.org/...c/5285b7009dc1e09d5bb9e05fae82e1a807882dbc
git.kernel.org/...c/0e20450829ca3c1dbc2db536391537c57a40fe0b
