CVE-2022-2601
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.
Published:Nov 15, 2022
Last Modified:May 20, 2025
EPS:Dec 14, 2022
EPSS Score:0.0012
CVSS Score:8.6
Affected Products
Vendor
Product
Action
Vendor
Fedoraproject
Product
Fedora
Fedoraproject
Fedora
Vendor
Gnu
Product
Grub2
Gnu
Grub2
Vendor
Redhat
Product
Enterprise Linux
Redhat
Enterprise Linux
Vendor
Redhat
Product
Enterprise Linux Eus
Redhat
Enterprise Linux Eus
Vendor
Redhat
Product
Enterprise Linux For Power Little Endian Eus
Redhat
Enterprise Linux For Power Little Endian Eus
Vendor
Redhat
Product
Enterprise Linux Server Aus
Redhat
Enterprise Linux Server Aus
Vendor
Redhat
Product
Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
Redhat
Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
Vendor
Redhat
Product
Enterprise Linux Server Tus
Redhat
Enterprise Linux Server Tus
Vendor
Redhat
Product
Enterprise Linux Server Update Services For Sap Solutions
Redhat
Enterprise Linux Server Update Services For Sap Solutions
Vendor
Redhat
Product
Rhel Aus
Redhat
Rhel Aus
Vendor
Redhat
Product
Rhel E4s
Redhat
Rhel E4s
Vendor
Redhat
Product
Rhel Eus
Redhat
Rhel Eus
Vendor
Redhat
Product
Rhel Tus
Redhat
Rhel Tus
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
