CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font

Published Oct 15, 2025
·
Updated

fbcon: fix integer overflow in fbcondosetfont

Affected Software

29 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.96.2-2
Microsoft azl3 kernel 6.6.104.2-4
Linux Linux kernel>=4.4.235<4.5
Linux Linux kernel>=4.9.235<4.10
Linux Linux kernel>=4.14.196<4.15
Linux Linux kernel>=4.19.143<4.20
Linux Linux kernel>=5.4.62<5.4.300
Linux Linux kernel>=5.8.6<5.9
Linux Linux kernel>=5.9.1<5.10.245
Linux Linux kernel>=5.11<5.15.194
Linux Linux kernel>=5.16<6.1.155
Linux Linux kernel>=6.2<6.6.109
Linux Linux kernel>=6.7<6.12.50
Linux Linux kernel>=6.13<6.16.10
Linux Linux kernel=5.9
Linux Linux kernel=5.9-rc3
Linux Linux kernel=5.9-rc4
Linux Linux kernel=5.9-rc5
Linux Linux kernel=5.9-rc6
Linux Linux kernel=5.9-rc7
Linux Linux kernel=5.9-rc8
Linux Linux kernel=6.17-rc1
Linux Linux kernel=6.17-rc2
Linux Linux kernel=6.17-rc3
Linux Linux kernel=6.17-rc4
Linux Linux kernel=6.17-rc5
Linux Linux kernel=6.17-rc6
Linux Linux kernel=6.17-rc7

Event History

Oct 15, 2025
CVE Published
via MITRE·07:55 AM
Data Sourced
via MITRE·07:55 AM
DescriptionSeverity
Data Sourced
via NVD·08:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Oct 16, 2025
Data Sourced
via Microsoft·01:01 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·01:01 AM
Affected Software
Updated
via Microsoft·01:01 AM
DescriptionSeverity
Updated
via Microsoft·01:01 AM
Affected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-39967?

CVE-2025-39967 has been classified as a high-severity vulnerability due to the potential for integer overflow leading to application crashes or other security risks.

2

How do I fix CVE-2025-39967?

To fix CVE-2025-39967, you should update to the latest version of the Linux kernel that resolves this integer overflow vulnerability.

3

What systems are affected by CVE-2025-39967?

CVE-2025-39967 affects systems running vulnerable versions of the Linux kernel that utilize the fbcon module.

4

What are the consequences of not addressing CVE-2025-39967?

Failure to address CVE-2025-39967 may allow attackers to exploit the vulnerability, potentially leading to crashes or unauthorized access to the system.

5

How can I check if my Linux kernel is vulnerable to CVE-2025-39967?

You can check your Linux kernel version against the patched releases mentioned in the vendor's advisory to determine if you are affected by CVE-2025-39967.

Contact

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