CVE-2024-46707 KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3

What is CVE-2024-46707?

CVE-2024-46707 is a medium-severity vulnerability in Linux kernel, published on 13 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3

On a system with a GICv3, if a guest hasn't been configured with GICv3 and that the host is not capable of GICv2 emulation, a write to any of the ICC_*SGI*_EL1 registers is trapped to EL2.

We therefore try to emulate the SGI access, only to hit a NULL pointer as no private interrupt is allocated (no GIC, remember?).

The obvious fix is to give the guest what it deserves, in the shape of a UNDEF exception.

Weakness: CWE-476

Which versions are affected by CVE-2024-46707?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-46707?

Apply the vendor's patch.

Is CVE-2024-46707 being exploited?

There is no known exploitation of CVE-2024-46707 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-49335, BELL-CVE-2024-46707, DEBIAN-CVE-2024-46707, GHSA-v4vv-7v49-m3wg, UBUNTU-CVE-2024-46707.