DEBIAN-CVE-2018-18021
Record from OSV · Published October 7, 2018
arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux | Debian:13 | 4.18.10-2 |
| linux | Debian:14 | 4.18.10-2 |
| linux | Debian:12 | 4.18.10-2 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0 |
| Debian:14 | linux | 0 |
| Debian:12 | linux | 0 |
Timeline
- Oct 7, 2018 CVE Published
- Oct 23, 2026 CVE Updated
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