Linux Kernel Out-of-Bounds Access Vulnerability in Console Font Handling

A vulnerability in the Linux kernel's console font management can lead to out-of-bounds accesses to graphics memory. This issue arises when the console font is changed to a larger size, potentially leaving a previous selection outside the new screen dimensions. If the selection is removed during a resize operation, it can trigger unauthorized memory access. The vulnerability has been addressed by ensuring that any selection is cleared before the console font is updated.

Impact

Exploitation of this vulnerability could result in out-of-bounds memory access, potentially leading to memory corruption or unauthorized access to sensitive information.