CVE-2024-43819

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Source
https://cve.org/CVERecord?id=CVE-2024-43819
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-43819.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-43819
Downstream
Related
Published
2024-08-17T09:21:40.994Z
Modified
2026-03-20T12:22:24.569980Z
Summary
kvm: s390: Reject memory region operations for ucontrol VMs
Details

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

kvm: s390: Reject memory region operations for ucontrol VMs

This change rejects the KVMSETUSERMEMORYREGION and KVMSETUSERMEMORYREGION2 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 KVMS390UCASMAP and KVMS390UCASUNMAP.

Also improve s390 specific documentation for KVMSETUSERMEMORYREGION and KVMSETUSERMEMORYREGION2.

[frankja@linux.ibm.com: commit message spelling fix, subject prefix fix]

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43819.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
27e0393f15fc8bc855c6a888387ff5ffd2181089
Fixed
49c9945c054df4c22008e2bf87ca74d3e2507aa6
Fixed
7816e58967d0e6cadce05c8540b47ed027dc2499

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-43819.json"