CVE-2026-46191
fbcon: Avoid OOB font access if console rotation fails
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 28, 2026 |
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Affected Versions
Linux / Linux
6cc50e1c5b57180fd37a31282000f43859b0fe73 < 594973a2e54924d8ba31c9faac669fc1ba6fcb80 6cc50e1c5b57180fd37a31282000f43859b0fe73 < ab6c34b9829d5de03f1d08a47a2253729a6e7e27 6cc50e1c5b57180fd37a31282000f43859b0fe73 < 7105d9f1387d63b15c9a860674fc92c959181f2f 6cc50e1c5b57180fd37a31282000f43859b0fe73 < b44cc78ff46b96e72d333a3be6aaaa0a14797263 6cc50e1c5b57180fd37a31282000f43859b0fe73 < e4ef723d8975a2694cc90733a6b888a5e2841842
Linux / Linux
2.6.15
References
git.kernel.org: https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80 git.kernel.org: https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27 git.kernel.org: https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f git.kernel.org: https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263 git.kernel.org: https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842