CVE-2025-40322

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
08/12/2025
Last modified:
08/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> fbdev: bitblit: bound-check glyph index in bit_putcs*<br /> <br /> bit_putcs_aligned()/unaligned() derived the glyph pointer from the<br /> character value masked by 0xff/0x1ff, which may exceed the actual font&amp;#39;s<br /> glyph count and read past the end of the built-in font array.<br /> Clamp the index to the actual glyph count before computing the address.<br /> <br /> This fixes a global out-of-bounds read reported by syzbot.

Impact