CVE-2026-46191
HIGHfbcon: Avoid OOB font access if console rotation fails
Title source: cnaDescription
In the Linux kernel, the following vulnerability has been resolved: fbcon: Avoid OOB font access if console rotation fails Clear the font buffer if the reallocation during console rotation fails in fbcon_rotate_font(). The putcs implementations for the rotated buffer will return early in this case. See [1] for an example. Currently, fbcon_rotate_font() keeps the old buffer, which is too small for the rotated font. Printing to the rotated console with a high-enough character code will overflow the font buffer. v2: - fix typos in commit message
References (5)
Core 5
Core References
Scores
CVSS v3
7.1
EPSS
0.0013
EPSS Percentile
2.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (14)
Linux/Linux
< 2.6.15
Linux/Linux
2.6.15
Linux/Linux
6.12.90 - 6.12.*
Linux/Linux
6.18.32 - 6.18.*
Linux/Linux
6.6.140 - 6.6.*
Linux/Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 - 594973a2e54924d8ba31c9faac669fc1ba6fcb80
Linux/Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 - 7105d9f1387d63b15c9a860674fc92c959181f2f
Linux/Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 - ab6c34b9829d5de03f1d08a47a2253729a6e7e27
Linux/Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 - b44cc78ff46b96e72d333a3be6aaaa0a14797263
Linux/Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 - e4ef723d8975a2694cc90733a6b888a5e2841842
... and 4 more
Published
May 28, 2026
Tracked Since
May 28, 2026