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Vulnerability · Published Apr 5, 2024 · Assigned by Linux

CVE-2024-26814vfio/fsl-mc: Block calling interrupt handler without trigger

Medium 5.5

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 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 87.0% 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: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.85-1DSA-5658-1
Debian:12linux6.1.85-1DEBIAN-CVE-2024-26814
Debian:13linux6.7.12-1DEBIAN-CVE-2024-26814
Debian:14linux6.7.12-1DEBIAN-CVE-2024-26814
Ubuntu:22.04:LTSlinux5.15.0-116.126UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux5.15.0-116.126USN-6898-1
Ubuntu:24.04:LTSlinux6.8.0-35.35UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux6.8.0-35.35USN-6816-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-aws5.15.0-1065.71USN-6898-3
Ubuntu:22.04:LTSlinux-aws5.15.0-1065.71UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-aws6.8.0-1009.9USN-6817-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1009.9UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure5.15.0-1068.77USN-6917-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1068.77UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-azure6.8.0-1008.8UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-azure6.8.0-1008.8USN-6817-3
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1068.77.1USN-6917-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1068.77.1UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gcp5.15.0-1064.72USN-6898-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1064.72UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-gcp6.8.0-1008.9USN-6817-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1008.9UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gke5.15.0-1062.68USN-6898-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1062.68UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-gke6.8.0-1004.7USN-6817-3
Ubuntu:24.04:LTSlinux-gke6.8.0-1004.7UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1048.55USN-6898-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1048.55UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-ibm5.15.0-1058.61USN-6898-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1058.61UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-ibm6.8.0-1006.6USN-6816-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1006.6UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1060.66USN-6898-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1060.66UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-kvm5.15.0-1062.67USN-6898-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1062.67UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-116.126UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-116.126USN-6898-2
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-35.35.1USN-6816-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-35.35.1UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1060.61USN-6898-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1060.61UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1006.6USN-6817-2
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1006.6UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oracle5.15.0-1063.69UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oracle5.15.0-1063.69USN-6898-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1006.6USN-6878-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1006.6UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-raspi5.15.0-1058.61UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-raspi6.8.0-1005.5UBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-raspi6.8.0-1005.5USN-6816-1
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26814
Ubuntu:24.04:LTSlinux-riscv6.8.0-35.35.1UBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-26814
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1035.39USN-7019-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1035.39UBUNTU-CVE-2024-26814

Affected products (as reported)

VendorProductVersions
Linux Linux cc0ee20bd96971c10eba9a83ecf1c0733078a083 – before a563fc18583ca4f42e2fdd0c70c7c618288e7edecc0ee20bd96971c10eba9a83ecf1c0733078a083 – before 250219c6a556f8c69c5910fca05a59037e24147dcc0ee20bd96971c10eba9a83ecf1c0733078a083 – before 083e750c9f5f4c3bf61161330fb84d7c8e8bb417cc0ee20bd96971c10eba9a83ecf1c0733078a083 – before ee0bd4ad780dfbb60355b99f25063357ab488267cc0ee20bd96971c10eba9a83ecf1c0733078a083 – before de87511fb0404d23b6da5f4660383b6ed095e28dcc0ee20bd96971c10eba9a83ecf1c0733078a083 – before 6ec0d88166dac43f29e96801c0927d514f17add9cc0ee20bd96971c10eba9a83ecf1c0733078a083 – before 7447d911af699a15f8d050dfcb7c680a86f87012
Linux Linux 5.10

References