CVE-2025-40322In 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…
Updated under an hour ago ()
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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.
- CVSS
- 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.