CVE-2024-43819Published

kvm: s390: Reject memory region operations for ucontrol VMs

Exact source revision recorded 30 Oct 2026 13:45:33 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2024-43819

Published

In the Linux kernel, the following vulnerability has been resolved: kvm: s390: Reject memory region operations for ucontrol VMs This change rejects the KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM. This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and would thus result in a null pointer dereference further in. Memory management needs to be performed in userspace and using the ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP. Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2. [[email protected]: commit message spelling fix, subject prefix fix]

Source published: 17 Aug 2024 09:21:40 UTC
Source modified: 30 Oct 2026 12:19:02 UTC
Observed here: 30 Oct 2026 13:45:33 UTC
Source terms: CVE Program Terms of Use

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