5.5

CVE-2024-46707

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.10.225
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.166
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.107
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.48
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.7
Linux ≫ Linux Kernel Version 6.11 Update rc1
Linux ≫ Linux Kernel Version 6.11 Update rc2
Linux ≫ Linux Kernel Version 6.11 Update rc3
Linux ≫ Linux Kernel Version 6.11 Update rc4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.144
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/15818af2f7aa55eff375333cb7689df15d3f24ef
Patch
https://git.kernel.org/stable/c/2073132f6ed3079369e857a8deb33d11bdd983bc
Patch
https://git.kernel.org/stable/c/3e6245ebe7ef341639e9a7e402b3ade8ad45a19f
Patch
https://git.kernel.org/stable/c/94d4fbad01b19ec5eab3d6b50aaec4f9db8b2d8d
Patch
https://git.kernel.org/stable/c/96b076e8ee5bc3a1126848c8add0f74bd30dc9d1
Patch
https://git.kernel.org/stable/c/9d7629bec5c3f80bd0e3bf8103c06a2f7046bd92
Patch
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html