kvm: s390: Reject memory region operations for ucontrol VMs
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]
CVE-2024-43819
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-43819
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "27e0393f15fc8bc855c6a888387ff5ffd2181089",
"lessThan": "705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7",
"versionType": "git"
},
{
"status": "affected",
"version": "27e0393f15fc8bc855c6a888387ff5ffd2181089",
"lessThan": "49c9945c054df4c22008e2bf87ca74d3e2507aa6",
"versionType": "git"
},
{
"status": "affected",
"version": "27e0393f15fc8bc855c6a888387ff5ffd2181089",
"lessThan": "7816e58967d0e6cadce05c8540b47ed027dc2499",
"versionType": "git"
}
],
"programFiles": [
"Documentation/virt/kvm/api.rst",
"arch/s390/kvm/kvm-s390.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.10.3",
"versionType": "semver",
"lessThanOrEqual": "6.10.*"
},
{
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"Documentation/virt/kvm/api.rst",
"arch/s390/kvm/kvm-s390.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-43819
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45896 · Revision 1
- Added to Heist Feed
- Publisher date