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Red Hat: CVE-2023-3161: kernel: fbcon: shift-out-of-bounds in fbcon_set_font() (Multiple Advisories)

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Red Hat: CVE-2023-3161: kernel: fbcon: shift-out-of-bounds in fbcon_set_font() (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
06/12/2023
Created
10/11/2023
Added
10/11/2023
Modified
03/13/2024

Description

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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