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Vulnerability · Published Aug 23, 2022 · Assigned by redhat

CVE-2021-3714

Medium 5.9

In plain English

A medium-severity information exposure in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities).

Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.6%top 23.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2021-3714
Debian:13linuxno fix listedDEBIAN-CVE-2021-3714
Debian:14linuxno fix listedDEBIAN-CVE-2021-3714
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linuxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-awsno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-azureno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-azure-fdeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-gcpno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-oracleno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-raspino fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-realtimeno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-3714
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-3714
Ubuntu:26.10linux-riscvno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2021-3714
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2021-3714
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2021-3714

Affected products (as reported)

VendorProductVersions
n/a kernel Not known

Weakness: CWE-200

References