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.
[frankja@linux.ibm.com: commit message spelling fix, subject prefix fix]
Metrics
Affected Vendors & Products
References
History
Wed, 11 Sep 2024 13:30:00 +0000
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ssvc
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Tue, 03 Sep 2024 18:15:00 +0000
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Linux
Linux linux Kernel |
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Weaknesses | CWE-476 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
Mon, 19 Aug 2024 19:15:00 +0000
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References |
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Metrics |
threat_severity
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cvssV3_1
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Sat, 17 Aug 2024 09:30:00 +0000
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Description | 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. [frankja@linux.ibm.com: commit message spelling fix, subject prefix fix] | |
Title | kvm: s390: Reject memory region operations for ucontrol VMs | |
References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-08-17T09:21:40.994Z
Updated: 2024-09-15T17:53:40.005Z
Reserved: 2024-08-17T09:11:59.271Z
Link: CVE-2024-43819
Vulnrichment
Updated: 2024-09-11T12:42:23.273Z
NVD
Status : Analyzed
Published: 2024-08-17T10:15:08.147
Modified: 2024-09-03T17:47:10.540
Link: CVE-2024-43819
Redhat