vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-36479): Linux kernel vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Jun 24, 2024
Added
Sep 12, 2024
Modified
Aug 18, 2025

Description

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

fpga: bridge: add owner module and take its refcount

The current implementation of the fpga bridge assumes that the low-level
module registers a driver for the parent device and uses its owner pointer
to take the module's refcount. This approach is problematic since it can
lead to a null pointer dereference while attempting to get the bridge if
the parent device does not have a driver.

To address this problem, add a module owner pointer to the fpga_bridge
struct and use it to take the module's refcount. Modify the function for
registering a bridge to take an additional owner module parameter and
rename it to avoid conflicts. Use the old function name for a helper macro
that automatically sets the module that registers the bridge as the owner.
This ensures compatibility with existing low-level control modules and
reduces the chances of registering a bridge without setting the owner.

Also, update the documentation to keep it consistent with the new interface
for registering an fpga bridge.

Other changes: opportunistically move put_device() from __fpga_bridge_get()
to fpga_bridge_get() and of_fpga_bridge_get() to improve code clarity since
the bridge device is taken in these functions.

Solutions

ubuntu-upgrade-linux-image-6-8-0-1010-gkeubuntu-upgrade-linux-image-6-8-0-1011-raspiubuntu-upgrade-linux-image-6-8-0-1012-ibmubuntu-upgrade-linux-image-6-8-0-1012-oemubuntu-upgrade-linux-image-6-8-0-1012-oracleubuntu-upgrade-linux-image-6-8-0-1012-oracle-64kubuntu-upgrade-linux-image-6-8-0-1013-nvidiaubuntu-upgrade-linux-image-6-8-0-1013-nvidia-64kubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatencyubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-1014-azureubuntu-upgrade-linux-image-6-8-0-1014-azure-fdeubuntu-upgrade-linux-image-6-8-0-1014-gcpubuntu-upgrade-linux-image-6-8-0-1015-awsubuntu-upgrade-linux-image-6-8-0-44-genericubuntu-upgrade-linux-image-6-8-0-44-generic-64kubuntu-upgrade-linux-image-6-8-0-44-lowlatencyubuntu-upgrade-linux-image-6-8-0-44-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-45-genericubuntu-upgrade-linux-image-6-8-0-45-generic-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-hwe-22-04ubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-6-8ubuntu-upgrade-linux-image-nvidia-64kubuntu-upgrade-linux-image-nvidia-64k-6-8ubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-upgrade-linux-image-nvidia-lowlatency-64kubuntu-upgrade-linux-image-oem-22-04ubuntu-upgrade-linux-image-oem-22-04aubuntu-upgrade-linux-image-oem-22-04bubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oem-22-04dubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-22-04ubuntu-upgrade-linux-image-virtual-hwe-24-04
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.