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OpenAdvisories
High · 8.4 CVE-2021-47049 EUVD-2021-33697GHSA-vw5q-4j3r-jcj8

Drivers: hv: vmbus: Use after free in __vmbus_open()

Published Feb 28, 2024 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-iot Package: linux-kvm Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-nvidia-6.2 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

Drivers: hv: vmbus: Use after free in __vmbus_open()

The "open_info" variable is added to the &vmbus_connection.chn_msg_list,
but the error handling frees "open_info" without removing it from the
list. This will result in a use after free. First remove it from the
list, and then free it.

Affected products

VendorProductAffectedFixed
Linux Linux 4.13.9 – < 4.14, 4.14 4.14

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.10.38-1 —
Debian 13 linux 5.10.38-1 —
Debian 12 linux 5.10.38-1 —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +21 No fix yet —
Ubuntu 20.04 LTS linux-gke +27 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux +10 No fix yet —
Ubuntu Pro 18.04 LTS linux +12 No fix yet —
Ubuntu Pro 16.04 LTS linux-gcp +4 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.188.1.150200.9.95.3 SUSE-SU-2024:1454-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.216.1 SUSE-SU-2024:1870-1
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.188.1.150200.9.95.3 SUSE-SU-2024:1454-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.182.1 SUSE-SU-2024:1646-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.166.1 SUSE-SU-2024:1465-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.166.1 SUSE-SU-2024:1465-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_43 1-150300.7.3.5 SUSE-SU-2024:1489-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_47 1-150200.5.3.3 SUSE-SU-2024:1454-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_56 1-8.3.1 SUSE-SU-2024:1870-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.188.1.150200.9.95.3 SUSE-SU-2024:1454-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.188.1 SUSE-SU-2024:1454-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1

Advisories 7

References