VULNERABILITY INTELLIGENCE

CVE-2022-2601

CVSS score8.6 HIGH
EPSS probability0.52%
CISA KEVNot currently listed
Published2022-12-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Description

A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.

Weakness classification

  • secalert@redhat.com: CWE-122
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-122

Primary references