CVE-2022-49478

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.

• linux linux kernel (>= 2.6.18 < 4.9.318) • linux linux kernel (>= 4.10 < 4.14.283) • linux linux kernel (>= 4.15 < 4.19.247) • linux linux kernel (>= 4.20 < 5.4.198) • linux linux kernel (>= 5.5 < 5.10.121) • linux linux kernel (>= 5.11 < 5.15.46) • linux linux kernel (>= 5.16 < 5.17.14) • linux linux kernel (>= 5.18 < 5.18.3)