CVE-2025-40322
Published: Dec 8, 2025
Modified: May 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < a10cede006f9614b465cf25609a8753efbfd45ccaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 0998a6cb232674408a03e8561dc15aa266b2f53baffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < db5c9a162d2f42bcc842b76b3d935dcc050a0eecaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < c12003bf91fdff381c55ef54fef3e961a5af2545affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 9ba1a7802ca9a2590cef95b253e6526f4364477f+3 more versions |
Linux | Linux | affected 2.6.12unaffected 0 - < 2.6.12unaffected 5.4.302 - <= 5.4.*unaffected 5.10.247 - <= 5.10.*unaffected 5.15.197 - <= 5.15.*+5 more versions |
References
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