What’s Vulnerable › Vulnerabilities

CVE-2017-18079

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-01-29 · updated 2026-06-17
• Weakness: CWE-476

Description

drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port->exists value can change after it is validated.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04
• Linux kernel: before 3.2.94; from 3.3 before 3.16.49; from 3.17 before 3.18.63; from 3.19 before 4.1.44; from 4.2 before 4.4.79; from 4.5 before 4.9.40 — fixed in 3.16.49, 3.18.63, 3.2.94, 4.1.44, 4.12.4, 4.4.79

How to fix

Upgrade to a fixed version: Linux kernel 3.16.49, 3.18.63, 3.2.94, 4.1.44. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=340d394a789518018f834ff70f7534fc463d3226
• http://www.securityfocus.com/bid/102895
• https://github.com/torvalds/linux/commit/340d394a789518018f834ff70f7534fc463d3226
• https://usn.ubuntu.com/3655-1/
• https://usn.ubuntu.com/3655-2/
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.4
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=340d394a789518018f834ff70f7534fc463d3226
• http://www.securityfocus.com/bid/102895
• https://github.com/torvalds/linux/commit/340d394a789518018f834ff70f7534fc463d3226
• https://usn.ubuntu.com/3655-1/
• https://usn.ubuntu.com/3655-2/
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.4

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