Tracker / CVE-2022-50101
CVE-2022-50101
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: vt8623fb: Check the size of screen before memset_io() In the function vt8623fb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug: [ 583.339036] BUG: unable to handle page fault for address: ffffc90005000000 [ 583.339049] #PF: supervisor write access in kernel mode [ 583.339052] #PF: error_code(0x0002) - not-present page [ 583.339074] RIP: 0010:memset_orig+0x33/0xb0 [ 583.339110] Call Trace: [ 583.339118] vt8623fb_set_par+0x11cd/0x21e0 [ 583.339146] fb_set_var+0x604/0xeb0 [ 583.339181] do_fb_ioctl+0x234/0x670 [ 583.339209] fb_ioctl+0xdd/0x130 Fix the this by checking the value of 'screen_size' before memset_io().
Prodotti e versioni affette
| linux | linux_kernel · 2.6.22 → 4.14.291 |
|---|---|
| linux | linux_kernel · 4.15 → 4.19.256 |
| linux | linux_kernel · 4.20 → 5.4.211 |
| linux | linux_kernel · 5.11 → 5.15.61 |
| linux | linux_kernel · 5.16 → 5.18.18 |
| linux | linux_kernel · 5.19 → 5.19.2 |
| linux | linux_kernel · 5.5 → 5.10.137 |