Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 9eb0118b3470b4d2e4e3bbb1fc088b30c0285d65; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 05daef0442d28350a1a0d6d0e2cab4a7a91df475; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before acdf26a912190fc6746e2a890d7d0338190527b4; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 32c124c9c03aa755cbaf60ef7f76afd918d47659; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 9df29aa5637d94d24f7c5f054ef4feaa7b766111; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 06616410a3e5e6cd1de5b7cbc668f1a7edeedad9; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 5285b7009dc1e09d5bb9e05fae82e1a807882dbc; affected bf35443314acb43fa8a3f9f8046e14cbe178762b before 0e20450829ca3c1dbc2db536391537c57a40fe0b |
| Linux / Linux | affected 3.19; unaffected 0 before 3.19; unaffected 5.4.299 through 5.4.*; unaffected 5.10.243 through 5.10.*; unaffected 5.15.192 through 5.15.*; unaffected 6.1.151 through 6.1.*; unaffected 6.6.105 through 6.6.*; unaffected 6.12.46 through 6.12.*; unaffected 6.16.6 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9eb0118b3470b4d2e4e3bbb1fc088b30c0285d65
- https://git.kernel.org/stable/c/05daef0442d28350a1a0d6d0e2cab4a7a91df475
- https://git.kernel.org/stable/c/acdf26a912190fc6746e2a890d7d0338190527b4
- https://git.kernel.org/stable/c/32c124c9c03aa755cbaf60ef7f76afd918d47659
- https://git.kernel.org/stable/c/9df29aa5637d94d24f7c5f054ef4feaa7b766111
- https://git.kernel.org/stable/c/06616410a3e5e6cd1de5b7cbc668f1a7edeedad9
- https://git.kernel.org/stable/c/5285b7009dc1e09d5bb9e05fae82e1a807882dbc
- https://git.kernel.org/stable/c/0e20450829ca3c1dbc2db536391537c57a40fe0b
ADP enrichment
No English description supplied.