CVE-2026-46191
Full vulnerability record from the local CVENow database.
Description
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
Severity
HIGH
CVSS score
7.1
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-28 10:16:34.740000
Last modified
2026-11-06 17:17:43.867000
View original CVE JSON
{
"id": "CVE-2026-46191",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-05-28T10:16:34.740",
"lastModified": "2026-11-06T17:17:43.867",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Avoid OOB font access if console rotation fails\n\nClear the font buffer if the reallocation during console rotation fails\nin fbcon_rotate_font(). The putcs implementations for the rotated buffer\nwill return early in this case. See [1] for an example.\n\nCurrently, fbcon_rotate_font() keeps the old buffer, which is too small\nfor the rotated font. Printing to the rotated console with a high-enough\ncharacter code will overflow the font buffer.\n\nv2:\n- fix typos in commit message"
}
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"privilegesRequired": "LOW",
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"description": [
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