What’s Vulnerable › Vulnerabilities

CVE-2018-19407

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-11-21 · updated 2026-06-17
• Weakness: CWE-476

Description

The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
• Linux kernel: through 4.19.2

References

• http://www.securityfocus.com/bid/105987
• https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
• https://lkml.org/lkml/2018/11/20/580
• https://usn.ubuntu.com/3871-1/
• https://usn.ubuntu.com/3871-3/
• https://usn.ubuntu.com/3871-4/
• https://usn.ubuntu.com/3871-5/
• https://usn.ubuntu.com/3872-1/
• https://usn.ubuntu.com/3878-1/
• https://usn.ubuntu.com/3878-2/
• https://usn.ubuntu.com/3879-1/
• https://usn.ubuntu.com/3879-2/

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