CVE-2025-40322

Advisory lineage Upstream: 0 Downstream: 57
Deferred
Published: 08 Dec 2025, 00:46
Last modified:11 May 2026, 21:47

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
0.08% LOW
0% probability +0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Dec 2025, 00:46
Published
Vulnerability first disclosed
11 May 2026, 21:47
Last Modified
Vulnerability information updated

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.

EPSS Trends

Current EPSS score: 0.08%• Percentile: 24%

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a10cede006f9614b465cf25609a8753efbfd45cc | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0998a6cb232674408a03e8561dc15aa266b2f53b | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < db5c9a162d2f42bcc842b76b3d935dcc050a0eec | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c12003bf91fdff381c55ef54fef3e961a5af2545 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9ba1a7802ca9a2590cef95b253e6526f4364477f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 901f44227072be60812fe8083e83e1533c04eed1 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < efaf89a75a29b2d179bf4fe63ca62852e93ad620 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 18c4ef4e765a798b47980555ed665d78b71aeadf | 2.6.12

References (8)