CVE-2025-40322

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Source
https://cve.org/CVERecord?id=CVE-2025-40322
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40322.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-40322
Downstream
Related
Published
2025-12-08T00:46:49.773Z
Modified
2026-03-12T03:54:40.185211Z
Summary
fbdev: bitblit: bound-check glyph index in bit_putcs*
Details

In the Linux kernel, the following vulnerability has been resolved:

fbdev: bitblit: bound-check glyph index in bit_putcs*

bitputcsaligned()/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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40322.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed
a10cede006f9614b465cf25609a8753efbfd45cc
Fixed
0998a6cb232674408a03e8561dc15aa266b2f53b
Fixed
db5c9a162d2f42bcc842b76b3d935dcc050a0eec
Fixed
c12003bf91fdff381c55ef54fef3e961a5af2545
Fixed
9ba1a7802ca9a2590cef95b253e6526f4364477f
Fixed
901f44227072be60812fe8083e83e1533c04eed1
Fixed
efaf89a75a29b2d179bf4fe63ca62852e93ad620
Fixed
18c4ef4e765a798b47980555ed665d78b71aeadf

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40322.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.12
Fixed
5.4.302
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.247
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.197
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.159
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.117
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.58
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.17.8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40322.json"