CVE-2022-2601
moderate-risk
Published 2022-12-14
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.
Do I need to act?
-
0.06% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10
High
LOCAL
/ LOW complexity
Affected Products (12)
Affected Vendors
References (7)
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2112975#c0
43
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
0/34 · Minimal
Exposure
17/34 · Moderate