CVE-2025-39967 — Integer Overflow or Wraparound in Linux
Severity
7.8HIGHNVD
OSV5.5OSV3.2
EPSS
0.0%
top 95.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 15
Latest updateApr 13
Description
In the Linux kernel, the following vulnerability has been resolved:
fbcon: fix integer overflow in fbcon_do_set_font
Fix integer overflow vulnerabilities in fbcon_do_set_font() where font
size calculations could overflow when handling user-controlled font
parameters.
The vulnerabilities occur when:
1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount
multiplication with user-controlled values that can overflow.
2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow
3…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9