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OpenAdvisories
Unscored CVE-2022-49788 EUVD-2025-12984GHSA-65f7-9jmg-75c7

misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()

Published May 1, 2025 · Updated Nov 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-5.15 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-6.5 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-5.15 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-6.5 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-5.15 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-6.5 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-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra-5.15 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-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 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-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()

`struct vmci_event_qp` allocated by qp_notify_peer() contains padding,
which may carry uninitialized data to the userspace, as observed by
KMSAN:

BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121
instrument_copy_to_user ./include/linux/instrumented.h:121
_copy_to_user+0x5f/0xb0 lib/usercopy.c:33
copy_to_user ./include/linux/uaccess.h:169
vmci_host_do_receive_datagram drivers/misc/vmw_vmci/vmci_host.c:431
vmci_host_unlocked_ioctl+0x33d/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:925
vfs_ioctl fs/ioctl.c:51
...

Uninit was stored to memory at:
kmemdup+0x74/0xb0 mm/util.c:131
dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:271
vmci_datagram_dispatch+0x4f8/0xfc0 drivers/misc/vmw_vmci/vmci_datagram.c:339
qp_notify_peer+0x19a/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1479
qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662
qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750
vmci_qp_broker_alloc+0x96/0xd0 drivers/misc/vmw_vmci/vmci_queue_pair.c:1940
vmci_host_do_alloc_queuepair drivers/misc/vmw_vmci/vmci_host.c:488
vmci_host_unlocked_ioctl+0x24fd/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:927
...

Local variable ev created at:
qp_notify_peer+0x54/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1456
qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662
qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750

Bytes 28-31 of 48 are uninitialized
Memory access of size 48 starts at ffff888035155e00
Data copied to user address 0000000020000100

Use memset() to prevent the infoleaks.

Also speculatively fix qp_notify_peer_local(), which may suffer from the
same problem.

Affected products

VendorProductAffectedFixed
Linux Linux 3.9 4.9.334

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 6.0.10-1 —
Debian 13 linux 6.0.10-1 —
Debian 12 linux 6.0.10-1 —
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1014.16 —
Ubuntu 24.04 LTS linux-realtime +1 No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-67.74 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1031.35 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1034.41 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1034.41.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1030.37 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1028.33 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1016.21 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1026.29 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1026.31 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1029.34 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1023.23 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1030.36 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1025.27 —
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-144.161 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1097.105 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1031.35~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1104.110 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1034.41~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1059.65 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1101.110 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1030.37~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-67.74~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1045.50 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1026.31~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1013.15 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1087.93 —
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1014.14~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1094.103 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1030.36~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1081.92 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1030.34~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1022.26 —
Ubuntu 18.04 LTS linux 4.15.0-206.217 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1151.164 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1097.105~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1162.177 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1104.110~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1146.162 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1101.110~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-144.161~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1045.50~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1136.141 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1115.126 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1094.103~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1081.92~18.04.1 —
Show 10 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1022.27 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1033.36 —
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 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1099.107+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1104.110+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1073.82 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1101.110+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2090.96 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2071.77 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1108.119 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2055.60 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 16.04 LTS linux +2 No fix yet —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1151.164~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1162.177~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1146.162~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-206.217~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1115.126~16.04.1 —
Ubuntu Pro 14.04 LTS linux +2 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1162.177~14.04.1 —
ReleasePackageFixed inAdvisory
RHEL 9 rv +77 5.14.0-570.32.1.el9_6 RHSA-2025:12746
RHEL 8 kernel-rt +12 4.18.0-553.62.1.rt7.403.el8_10 RHSA-2025:11299
RHEL 8 perf +26 4.18.0-553.62.1.el8_10 RHSA-2025:11298
Show 13 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat Rhel Extras Rt Els 7 kernel-rt +7 3.10.0-1160.137.1.rt56.1289.el7 RHSA-2025:14746
RHEL 9.4 EUS bpftool 7.3.0-427.81.1.el9_4 RHSA-2025:13135
RHEL 9.4 EUS rv +64 5.14.0-427.81.1.el9_4 RHSA-2025:13135
RHEL 9.2 E4S bpftool 7.0.0-284.130.1.el9_2 RHSA-2025:13781
RHEL 9.2 E4S kernel-rt +14 5.14.0-284.130.1.rt14.415.el9_2 RHSA-2025:13633
RHEL 9.2 E4S perf +47 5.14.0-284.130.1.el9_2 RHSA-2025:13781
RHEL 9.0 E4S kernel-rt +12 5.14.0-70.141.1.rt21.213.el9_0 RHSA-2025:13029
RHEL 9.0 E4S perf +28 5.14.0-70.141.1.el9_0 RHSA-2025:13030
RHEL 8.8 TUS perf +17 4.18.0-477.104.1.el8_8 RHSA-2025:13061
RHEL 8.8 E4S perf +18 4.18.0-477.104.1.el8_8 RHSA-2025:13061
RHEL 8.6 TUS perf +17 4.18.0-372.157.1.el8_6 RHSA-2025:13776
RHEL 8.6 E4S perf +25 4.18.0-372.157.1.el8_6 RHSA-2025:13776
RHEL 8.6 AUS perf +17 4.18.0-372.157.1.el8_6 RHSA-2025:13776
RHEL 8.4 EUS Long Life perf +17 4.18.0-305.166.1.el8_4 RHSA-2025:13120
RHEL 8.4 AUS perf +17 4.18.0-305.166.1.el8_4 RHSA-2025:13120
RHEL 8.2 AUS perf +17 4.18.0-193.164.1.el8_2 RHSA-2025:14136
RHEL 7 ELS perf +18 3.10.0-1160.137.1.el7 RHSA-2025:14748

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 9 rv +75 5.14.0-570.32.1.el9_6 ALSA-2025:12746
AlmaLinux 8 kernel-rt +9 4.18.0-553.62.1.rt7.403.el8_10 ALSA-2025:11299
AlmaLinux 8 perf +24 4.18.0-553.62.1.el8_10 ALSA-2025:11298

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 9 kernel 5.14.0-570.32.1.el9_6 RLSA-2025:12746
Rocky Linux 8 kernel 4.18.0-553.62.1.el8_10 RLSA-2025:11298
Rocky Linux 8 kernel-rt 4.18.0-553.62.1.rt7.403.el8_10 RLSA-2025:11299
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.110.1 SUSE-SU-2025:02173-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.110.1.150500.6.51.3 SUSE-SU-2025:02173-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.261.1 SUSE-SU-2025:01983-1
Show 18 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.110.1.150500.6.51.3 SUSE-SU-2025:02173-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.110.1 SUSE-SU-2025:02173-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.110.1.150500.6.51.3 SUSE-SU-2025:02173-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.97.1 SUSE-SU-2025:01966-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.110.1 SUSE-SU-2025:02173-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.121.1 SUSE-SU-2025:01918-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.121.1 SUSE-SU-2025:01918-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.211.1 SUSE-SU-2025:01995-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.211.1 SUSE-SU-2025:01995-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.110.1 SUSE-SU-2025:02173-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_27 1-150500.11.7.1 SUSE-SU-2025:02173-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_41 1-150400.9.3.1 SUSE-SU-2025:02262-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_58 1-150300.7.3.1 SUSE-SU-2025:01982-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.261.1 SUSE-SU-2025:01983-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_69 1-8.3.1 SUSE-SU-2025:01983-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.110.1 SUSE-SU-2025:02173-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.110.1.150500.6.51.3 SUSE-SU-2025:02173-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2 kernel-livepatch-4.14.301-224.520 1.0-0.amzn2 ALAS2-2022-1903
Amazon Linux 2 perf +8 4.14.301-224.520.amzn2 ALAS2-2022-1903

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 rv +28 5.14.0-570.32.1.0.1.el9_6 ELSA-2025-12746
Oracle Linux 8 perf +19 4.18.0-553.62.1.el8_10 ELSA-2025-11298
Oracle Linux 7 perf +12 3.10.0-1160.119.1.0.11.el7 ELSA-2025-14748

Advisories 32

References