CVE-2026-46191High· 7.1▾ TwilightIn 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 implem…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.1%
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:
linux_kernel >= 2.6.15, < 6.6.140linux_kernel >= 6.7, < 6.12.90linux_kernel >= 6.13, < 6.18.32linux_kernel >= 6.19, < 7.0.7Upgrade past the affected range:
linux_kernel 7.0.7Connected by shared product, vendor, weakness, or advisory.
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