CVE-2024-43819
Severity CVSS v4.0:
Pending analysis
Type:
CWE-476
NULL Pointer Dereference
Publication date:
17/08/2024
Last modified:
03/09/2024
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
kvm: s390: Reject memory region operations for ucontrol VMs<br />
<br />
This change rejects the KVM_SET_USER_MEMORY_REGION and<br />
KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM.<br />
This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and<br />
would thus result in a null pointer dereference further in.<br />
Memory management needs to be performed in userspace and using the<br />
ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP.<br />
<br />
Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION<br />
and KVM_SET_USER_MEMORY_REGION2.<br />
<br />
[frankja@linux.ibm.com: commit message spelling fix, subject prefix fix]
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.4 (including) | 6.10.3 (excluding) |
To consult the complete list of CPE names with products and versions, see this page