IT

Tracker / CVE-2022-50185

CVE-2022-50185

High 7.8

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() The last case label can write two buffers 'mc_reg_address[j]' and 'mc_data[j]' with 'j' offset equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE since there are no checks for this value in both case labels after the last 'j++'. Instead of changing '>' to '>=' there, add the bounds check at the start of the second 'case' (the first one already has it). Also, remove redundant last checks for 'j' index bigger than array size. The expression is always false. Moreover, before or after the patch 'table->last' can be equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE and it seems it can be a valid value. Detected using the static analysis tool - Svace.

Affected products and versions

linux linux_kernel · 3.11 → 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

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References