CVE-2024-46707

medium

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.

References

https://git.kernel.org/stable/c/9d7629bec5c3f80bd0e3bf8103c06a2f7046bd92

https://git.kernel.org/stable/c/96b076e8ee5bc3a1126848c8add0f74bd30dc9d1

https://git.kernel.org/stable/c/94d4fbad01b19ec5eab3d6b50aaec4f9db8b2d8d

https://git.kernel.org/stable/c/3e6245ebe7ef341639e9a7e402b3ade8ad45a19f

https://git.kernel.org/stable/c/2073132f6ed3079369e857a8deb33d11bdd983bc

https://git.kernel.org/stable/c/15818af2f7aa55eff375333cb7689df15d3f24ef

Details

Source: Mitre, NVD

Published: 2024-09-13

Updated: 2024-09-19

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium