Ubuntu: (Multiple Advisories) (CVE-2024-47748): Linux kernel vulnerabilities

Ubuntu: (Multiple Advisories) (CVE-2024-47748): Linux kernel vulnerabilities

Severity

7

CVSS

(AV:L/AC:L/Au:S/C:C/I:C/A:C)

Published

10/21/2024

Created

12/19/2024

Added

12/18/2024

Modified

01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: vhost_vdpa: assign irq bypass producer token correctly We used to call irq_bypass_unregister_producer() in vhost_vdpa_setup_vq_irq() which is problematic as we don't know if the token pointer is still valid or not. Actually, we use the eventfd_ctx as the token so the life cycle of the token should be bound to the VHOST_SET_VRING_CALL instead of vhost_vdpa_setup_vq_irq() which could be called by set_status(). Fixing this by setting up irq bypass producer's token when handling VHOST_SET_VRING_CALL and un-registering the producer before calling vhost_vring_ioctl() to prevent a possible use after free as eventfd could have been released in vhost_vring_ioctl(). And such registering and unregistering will only be done if DRIVER_OK is set.

Solution(s)

• ubuntu-upgrade-linux-image-5-15-0-1039-xilinx-zynqmp
• ubuntu-upgrade-linux-image-5-15-0-1056-gkeop
• ubuntu-upgrade-linux-image-5-15-0-1066-ibm
• ubuntu-upgrade-linux-image-5-15-0-1066-raspi
• ubuntu-upgrade-linux-image-5-15-0-1068-nvidia
• ubuntu-upgrade-linux-image-5-15-0-1068-nvidia-lowlatency
• ubuntu-upgrade-linux-image-5-15-0-1070-gke
• ubuntu-upgrade-linux-image-5-15-0-1070-kvm
• ubuntu-upgrade-linux-image-5-15-0-1071-intel-iotg
• ubuntu-upgrade-linux-image-5-15-0-1071-oracle
• ubuntu-upgrade-linux-image-5-15-0-1072-gcp
• ubuntu-upgrade-linux-image-5-15-0-1073-aws
• ubuntu-upgrade-linux-image-5-15-0-1078-azure
• ubuntu-upgrade-linux-image-5-15-0-127-generic
• ubuntu-upgrade-linux-image-5-15-0-127-generic-64k
• ubuntu-upgrade-linux-image-5-15-0-127-generic-lpae
• ubuntu-upgrade-linux-image-5-15-0-127-lowlatency
• ubuntu-upgrade-linux-image-5-15-0-127-lowlatency-64k
• ubuntu-upgrade-linux-image-aws
• ubuntu-upgrade-linux-image-aws-lts-22-04
• ubuntu-upgrade-linux-image-azure
• ubuntu-upgrade-linux-image-azure-cvm
• ubuntu-upgrade-linux-image-azure-lts-22-04
• ubuntu-upgrade-linux-image-gcp
• ubuntu-upgrade-linux-image-gcp-lts-22-04
• ubuntu-upgrade-linux-image-generic
• ubuntu-upgrade-linux-image-generic-64k
• ubuntu-upgrade-linux-image-generic-64k-hwe-20-04
• ubuntu-upgrade-linux-image-generic-hwe-20-04
• ubuntu-upgrade-linux-image-generic-lpae
• ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
• ubuntu-upgrade-linux-image-gke
• ubuntu-upgrade-linux-image-gke-5-15
• ubuntu-upgrade-linux-image-gkeop
• ubuntu-upgrade-linux-image-gkeop-5-15
• ubuntu-upgrade-linux-image-ibm
• ubuntu-upgrade-linux-image-intel
• ubuntu-upgrade-linux-image-intel-iotg
• ubuntu-upgrade-linux-image-kvm
• ubuntu-upgrade-linux-image-lowlatency
• ubuntu-upgrade-linux-image-lowlatency-64k
• ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04
• ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
• ubuntu-upgrade-linux-image-nvidia
• ubuntu-upgrade-linux-image-nvidia-lowlatency
• ubuntu-upgrade-linux-image-oem-20-04
• ubuntu-upgrade-linux-image-oem-20-04b
• ubuntu-upgrade-linux-image-oem-20-04c
• ubuntu-upgrade-linux-image-oem-20-04d
• ubuntu-upgrade-linux-image-oracle
• ubuntu-upgrade-linux-image-oracle-lts-22-04
• ubuntu-upgrade-linux-image-raspi
• ubuntu-upgrade-linux-image-raspi-nolpae
• ubuntu-upgrade-linux-image-virtual
• ubuntu-upgrade-linux-image-virtual-hwe-20-04
• ubuntu-upgrade-linux-image-xilinx-zynqmp

References

• https://attackerkb.com/topics/cve-2024-47748
• CVE - 2024-47748
• USN-7166-1
• USN-7166-2
• USN-7166-3
• USN-7166-4
• USN-7186-1
• USN-7186-2
• USN-7194-1

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