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Unscored CVE-2024-27437 EUVD-2024-24641GHSA-5mg2-h7qv-m552

vfio/pci: Disable auto-enable of exclusive INTx IRQ

Published Apr 5, 2024 · Updated Oct 15, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel 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-5.15 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 Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx 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-oem-6.8 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: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

vfio/pci: Disable auto-enable of exclusive INTx IRQ

Currently for devices requiring masking at the irqchip for INTx, ie.
devices without DisINTx support, the IRQ is enabled in request_irq()
and subsequently disabled as necessary to align with the masked status
flag. This presents a window where the interrupt could fire between
these events, resulting in the IRQ incrementing the disable depth twice.
This would be unrecoverable for a user since the masked flag prevents
nested enables through vfio.

Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx
is never auto-enabled, then unmask as required.

Affected products

VendorProductAffectedFixed
Linux Linux 3.6 5.4.274

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 6.7.12-1 —
Debian 13 linux 6.7.12-1 —
Debian 12 linux 6.1.85-1 DSA-5658-1
Debian 11 linux 5.10.216-1 DSA-5681-1
Debian 10 linux-5.10 5.10.216-1~deb10u1 DLA-3842-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1047.49 —
Ubuntu 24.04 LTS linux 6.8.0-35.35 USN-6816-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1009.9 USN-6817-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1008.8 USN-6817-3
Ubuntu 24.04 LTS linux-gcp 6.8.0-1008.9 USN-6817-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1004.7 USN-6817-3
Ubuntu 24.04 LTS linux-ibm +2 6.8.0-1006.6 USN-6878-1, USN-6817-2, USN-6816-1
Ubuntu 24.04 LTS linux-raspi 6.8.0-1005.5 USN-6816-1
Ubuntu 24.04 LTS linux-riscv +1 6.8.0-35.35.1 USN-6816-1
Ubuntu 22.04 LTS linux +1 5.15.0-116.126 USN-6898-2, USN-6898-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1065.71 USN-6898-3
Ubuntu 22.04 LTS linux-azure 5.15.0-1068.77 USN-6917-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1068.77.1 USN-6917-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1064.72 USN-6898-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1062.68 USN-6898-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1048.55 USN-6898-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1058.61 USN-6919-1, USN-6898-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1060.66 USN-6898-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1062.67 USN-6898-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1060.61 USN-6898-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1026.26 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1063.69 USN-6898-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1035.39 USN-7019-1
Ubuntu 20.04 LTS linux 5.4.0-189.209 USN-6896-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1128.138 USN-6896-5
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1065.71~20.04.1 USN-6898-4
Ubuntu 20.04 LTS linux-azure 5.4.0-1133.140 USN-6896-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1068.77~20.04.1 USN-6917-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1068.77~20.04.1.1 USN-6917-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1088.95 USN-6896-1
Ubuntu 20.04 LTS linux-gcp 5.4.0-1132.141 USN-6896-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1065.73~20.04.1 USN-6927-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1095.99 USN-6896-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1048.55~20.04.1 USN-6898-1
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-116.126~20.04.1 USN-6898-3, USN-6898-2
Ubuntu 20.04 LTS linux-ibm 5.4.0-1075.80 USN-6896-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1058.61~20.04.1 USN-6898-2
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1060.66~20.04.1 USN-6898-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1040.41 USN-6896-5
Ubuntu 20.04 LTS linux-kvm 5.4.0-1116.123 USN-6896-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1027.27~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1127.136 USN-6896-3
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1063.69~20.04.1 USN-6898-2
Ubuntu 20.04 LTS linux-raspi 5.4.0-1112.124 USN-6896-4
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1061.65~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1047.51 USN-6896-3
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 14 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2004.4 —
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1002.2 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1058.60 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1066.74 —
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 22.04 LTS linux-aws-fips 5.15.0-1065.71+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1068.77+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-115.125+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1064.72+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1128.138+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1133.140+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1102.112 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1132.141+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2111.117 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2090.96 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1127.138 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2074.79 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1105.112 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 18.04 LTS linux 4.15.0-229.241 USN-7028-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1173.186 USN-7028-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1128.138~18.04.1 USN-6896-5
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1181.196 USN-7028-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1133.140~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1166.183 USN-7028-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1132.141~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-189.209~18.04.1 USN-6896-2
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1075.80~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1156.161 USN-7028-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1135.146 USN-7028-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1127.136~18.04.1 USN-6896-2
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1112.124~18.04.1 USN-6896-4
Ubuntu Pro 16.04 LTS linux 4.4.0-259.293 USN-7039-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1174.189 USN-7039-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1173.186~16.04.1 USN-7028-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1181.196~16.04.1 USN-7028-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1166.183~16.04.1 USN-7028-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-229.241~16.04.1 USN-7028-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1137.147 USN-7039-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1135.146~16.04.1 USN-7028-1
Ubuntu Pro 14.04 LTS linux No fix yet —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1136.142 USN-7039-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1181.196~14.04.1 USN-7028-2
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-259.293~14.04.1 USN-7039-1
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 9 rv +67 5.14.0-503.11.1.el9_5 RHSA-2024:9315
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.11.1 SUSE-SU-2024:3194-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.22.1.150600.12.8.3 SUSE-SU-2024:3383-1
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.63.1 SUSE-SU-2024:2947-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES 12 SP5 kernel-docs 4.12.14-122.225.2 SUSE-SU-2024:2940-1
SLES 12 SP5 kernel-syms +3 4.12.14-122.225.1 SUSE-SU-2024:2940-1
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.197.1 SUSE-SU-2024:2892-1
SLE Micro 6.0 kernel-default-base 6.4.0-17.1.1.51 SUSE-SU-2025:20044-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_2 +1 1-1.1 SUSE-SU-2025:20047-1, SUSE-SU-2025:20044-1
SLE Micro 6.0 kernel-rt +1 6.4.0-10.1 SUSE-SU-2025:20047-1
SLE Micro 6.0 kernel-source +2 6.4.0-19.1 SUSE-SU-2025:20044-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_2 1-150600.1.3.2 SUSE-SU-2024:3195-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_4 1-150600.13.3.3 SUSE-SU-2024:3383-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_17 +1 1-150500.11.3.1 SUSE-SU-2024:2939-1, SUSE-SU-2024:2894-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_59 1-8.3.1 SUSE-SU-2024:2940-1
SUSE Real Time Module 15 SP6 kernel-rt +2 6.4.0-150600.10.8.3 SUSE-SU-2024:3195-1
SUSE Real Time Module 15 SP6 kernel-syms-rt 6.4.0-150600.10.8.1 SUSE-SU-2024:3195-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.22.1 SUSE-SU-2024:3383-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.11.1 SUSE-SU-2024:3194-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.22.1.150600.12.8.3 SUSE-SU-2024:3383-1
openSUSE Leap 15.6 kernel-rt +2 6.4.0-150600.10.8.3 SUSE-SU-2024:3195-1
openSUSE Leap 15.6 kernel-syms-rt 6.4.0-150600.10.8.1 SUSE-SU-2024:3195-1
openSUSE Leap 15.5 dtb-aarch64 +9 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.63.1 SUSE-SU-2024:2947-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-rt 5.14.21-150500.13.64.1 SUSE-SU-2024:2894-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.84-99.169 1.0-0.amzn2023 ALAS2023-2024-696
Amazon Linux 2023 perf +14 6.1.84-99.169.amzn2023 ALAS2023-2024-696

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 2 (CBL-Mariner) kernel 5.15.176.3-3 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 9 rv +28 5.14.0-503.11.1.el9_5 ELSA-2024-9315

Advisories 42

References