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Vulnerability · Published Apr 3, 2024 · Assigned by Linux

CVE-2023-52639KVM: s390: vsie: fix race during shadow creation

Medium 4.7

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)4.7Medium
Exploit odds (30 days)0.2%top 93.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.82-1DEBIAN-CVE-2023-52639
Debian:13linux6.7.7-1DEBIAN-CVE-2023-52639
Debian:14linux6.7.7-1DEBIAN-CVE-2023-52639
Ubuntu:22.04:LTSlinux5.15.0-127.137UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux5.15.0-127.137USN-7166-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-aws5.15.0-1073.79USN-7166-2
Ubuntu:22.04:LTSlinux-aws5.15.0-1073.79UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure5.15.0-1078.87UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure5.15.0-1078.87USN-7186-2
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1078.87.1UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gcp5.15.0-1072.80UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gcp5.15.0-1072.80USN-7166-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gke5.15.0-1070.76USN-7166-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1070.76UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1056.63USN-7166-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1056.63UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-ibm5.15.0-1066.69UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-ibm5.15.0-1066.69USN-7166-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1071.77UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1071.77USN-7186-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1070.75USN-7166-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1070.75UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-127.137USN-7166-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-127.137UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1068.69USN-7166-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1068.69UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1032.32UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1020.20UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oracle5.15.0-1071.77USN-7166-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1071.77UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-raspi5.15.0-1066.69USN-7166-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1066.69UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1039.43UBUNTU-CVE-2023-52639
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1039.43USN-7166-4

Affected products (as reported)

VendorProductVersions
Linux Linux a3508fbe9dc6dd3bece0c7bf889cc085a011738c – before 5df3b81a567eb565029563f26f374ae3803a1dfca3508fbe9dc6dd3bece0c7bf889cc085a011738c – before f5572c0323cf8b4f1f0618178648a25b8fb8a380a3508fbe9dc6dd3bece0c7bf889cc085a011738c – before 28bb27824f25f36e5f80229a358d66ee09244082a3508fbe9dc6dd3bece0c7bf889cc085a011738c – before fe752331d4b361d43cfd0b89534b4b2176057c32
Linux Linux 4.8

References