CVE-2024-43819
- Source
- https://nvd.nist.gov/vuln/detail/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
- 2024-08-17T10:15:08Z
- Modified
- 2025-08-09T20:01:26Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- 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]
- References