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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
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
06/12/2023
Created
10/11/2023
Added
10/11/2023
Modified
01/28/2025

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

References

  • CVE-2023-3161
  • RHSA-2023:5603
  • RHSA-2023:5604
  • RHSA-2023:6583
  • RHSA-2023:6901
  • RHSA-2023:7077
  • RHSA-2024:0412
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