vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-27437): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
04/05/2024
Added
07/01/2024
Modified
03/31/2025

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.

Solution(s)

ubuntu-upgrade-linux-image-4-15-0-1135-oracleubuntu-upgrade-linux-image-4-15-0-1156-kvmubuntu-upgrade-linux-image-4-15-0-1166-gcpubuntu-upgrade-linux-image-4-15-0-1173-awsubuntu-upgrade-linux-image-4-15-0-1181-azureubuntu-upgrade-linux-image-4-15-0-229-genericubuntu-upgrade-linux-image-4-15-0-229-lowlatencyubuntu-upgrade-linux-image-4-4-0-1136-awsubuntu-upgrade-linux-image-4-4-0-1137-kvmubuntu-upgrade-linux-image-4-4-0-1174-awsubuntu-upgrade-linux-image-4-4-0-259-genericubuntu-upgrade-linux-image-4-4-0-259-lowlatencyubuntu-upgrade-linux-image-5-15-0-1035-xilinx-zynqmpubuntu-upgrade-linux-image-5-15-0-1048-gkeopubuntu-upgrade-linux-image-5-15-0-1058-ibmubuntu-upgrade-linux-image-5-15-0-1058-raspiubuntu-upgrade-linux-image-5-15-0-1060-intel-iotgubuntu-upgrade-linux-image-5-15-0-1060-nvidiaubuntu-upgrade-linux-image-5-15-0-1060-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1062-gkeubuntu-upgrade-linux-image-5-15-0-1062-kvmubuntu-upgrade-linux-image-5-15-0-1063-oracleubuntu-upgrade-linux-image-5-15-0-1064-gcpubuntu-upgrade-linux-image-5-15-0-1065-awsubuntu-upgrade-linux-image-5-15-0-1065-gcpubuntu-upgrade-linux-image-5-15-0-1068-azureubuntu-upgrade-linux-image-5-15-0-1068-azure-fdeubuntu-upgrade-linux-image-5-15-0-116-genericubuntu-upgrade-linux-image-5-15-0-116-generic-64kubuntu-upgrade-linux-image-5-15-0-116-generic-lpaeubuntu-upgrade-linux-image-5-15-0-116-lowlatencyubuntu-upgrade-linux-image-5-15-0-116-lowlatency-64kubuntu-upgrade-linux-image-5-4-0-1040-iotubuntu-upgrade-linux-image-5-4-0-1047-xilinx-zynqmpubuntu-upgrade-linux-image-5-4-0-1075-ibmubuntu-upgrade-linux-image-5-4-0-1088-bluefieldubuntu-upgrade-linux-image-5-4-0-1095-gkeopubuntu-upgrade-linux-image-5-4-0-1112-raspiubuntu-upgrade-linux-image-5-4-0-1116-kvmubuntu-upgrade-linux-image-5-4-0-1127-oracleubuntu-upgrade-linux-image-5-4-0-1128-awsubuntu-upgrade-linux-image-5-4-0-1132-gcpubuntu-upgrade-linux-image-5-4-0-1133-azureubuntu-upgrade-linux-image-5-4-0-189-genericubuntu-upgrade-linux-image-5-4-0-189-generic-lpaeubuntu-upgrade-linux-image-5-4-0-189-lowlatencyubuntu-upgrade-linux-image-6-8-0-1004-gkeubuntu-upgrade-linux-image-6-8-0-1005-raspiubuntu-upgrade-linux-image-6-8-0-1006-ibmubuntu-upgrade-linux-image-6-8-0-1006-oemubuntu-upgrade-linux-image-6-8-0-1006-oracleubuntu-upgrade-linux-image-6-8-0-1006-oracle-64kubuntu-upgrade-linux-image-6-8-0-1008-azureubuntu-upgrade-linux-image-6-8-0-1008-azure-fdeubuntu-upgrade-linux-image-6-8-0-1008-gcpubuntu-upgrade-linux-image-6-8-0-1009-awsubuntu-upgrade-linux-image-6-8-0-35-genericubuntu-upgrade-linux-image-6-8-0-35-generic-64kubuntu-upgrade-linux-image-6-8-0-35-lowlatencyubuntu-upgrade-linux-image-6-8-0-35-lowlatency-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-aws-lts-22-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-cvmubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-fde-lts-22-04ubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-azure-lts-22-04ubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-gcp-lts-22-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-generic-lts-utopicubuntu-upgrade-linux-image-generic-lts-vividubuntu-upgrade-linux-image-generic-lts-wilyubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-15ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-15ubuntu-upgrade-linux-image-gkeop-5-4ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-intelubuntu-upgrade-linux-image-intel-iotgubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-lts-utopicubuntu-upgrade-linux-image-lowlatency-lts-vividubuntu-upgrade-linux-image-lowlatency-lts-wilyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04bubuntu-upgra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