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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-43819

kvm: s390: Reject memory region operations for ucontrol VMs

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Status
Published
Published
Updated
Assigning organization
Linux

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]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 27e0393f15fc8bc855c6a888387ff5ffd2181089 to < 8a1bbff443a5a22c466d11cbefca9cb361306a9baffected
  • 27e0393f15fc8bc855c6a888387ff5ffd2181089 to < 705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7affected
  • 27e0393f15fc8bc855c6a888387ff5ffd2181089 to < 49c9945c054df4c22008e2bf87ca74d3e2507aa6affected
  • 27e0393f15fc8bc855c6a888387ff5ffd2181089 to < 7816e58967d0e6cadce05c8540b47ed027dc2499affected

Linux Linux

Default version status: affected

  • 3.4affected
  • 0 to < 3.4unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.10.3 to ≤ 6.10.*unaffected
  • 6.11 to ≤ *unaffected

References