CVE-2025-40322

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

The following products are affected by CVE-2025-40322 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-40322.

URL	Resource
https://git.kernel.org/stable/c/0998a6cb232674408a03e8561dc15aa266b2f53b
https://git.kernel.org/stable/c/18c4ef4e765a798b47980555ed665d78b71aeadf
https://git.kernel.org/stable/c/901f44227072be60812fe8083e83e1533c04eed1
https://git.kernel.org/stable/c/9ba1a7802ca9a2590cef95b253e6526f4364477f
https://git.kernel.org/stable/c/a10cede006f9614b465cf25609a8753efbfd45cc
https://git.kernel.org/stable/c/c12003bf91fdff381c55ef54fef3e961a5af2545
https://git.kernel.org/stable/c/db5c9a162d2f42bcc842b76b3d935dcc050a0eec
https://git.kernel.org/stable/c/efaf89a75a29b2d179bf4fe63ca62852e93ad620
https://lore.kernel.org/linux-cve-announce/2025120823-CVE-2025-40322-6355@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-40322
https://www.cve.org/CVERecord?id=CVE-2025-40322