vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-27043): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
05/01/2024
Added
07/01/2024
Modified
01/30/2025

Description

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

media: edia: dvbdev: fix a use-after-free

In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed
in several error-handling paths. However, *pdvbdev is not set to NULL
after dvbdev's deallocation, causing use-after-frees in many places,
for example, in the following call chain:

budget_register
|-> dvb_dmxdev_init
|-> dvb_register_device
|-> dvb_dmxdev_release
|-> dvb_unregister_device
|-> dvb_remove_device
|-> dvb_device_put
|-> kref_put

When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in
dvb_register_device) could point to memory that had been freed in
dvb_register_device. Thereafter, this pointer is transferred to
kref_put and triggering a use-after-free.

Solution(s)

ubuntu-upgrade-linux-image-5-15-0-1030-xilinx-zynqmpubuntu-upgrade-linux-image-5-15-0-1046-gkeopubuntu-upgrade-linux-image-5-15-0-1056-ibmubuntu-upgrade-linux-image-5-15-0-1057-ibmubuntu-upgrade-linux-image-5-15-0-1058-intel-iotgubuntu-upgrade-linux-image-5-15-0-1058-nvidiaubuntu-upgrade-linux-image-5-15-0-1058-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1058-raspiubuntu-upgrade-linux-image-5-15-0-1060-gkeubuntu-upgrade-linux-image-5-15-0-1060-kvmubuntu-upgrade-linux-image-5-15-0-1061-oracleubuntu-upgrade-linux-image-5-15-0-1062-gcpubuntu-upgrade-linux-image-5-15-0-1063-awsubuntu-upgrade-linux-image-5-15-0-1065-azure-fdeubuntu-upgrade-linux-image-5-15-0-1066-azureubuntu-upgrade-linux-image-5-15-0-110-lowlatencyubuntu-upgrade-linux-image-5-15-0-110-lowlatency-64kubuntu-upgrade-linux-image-5-15-0-112-genericubuntu-upgrade-linux-image-5-15-0-112-generic-64kubuntu-upgrade-linux-image-5-15-0-112-generic-lpaeubuntu-upgrade-linux-image-5-15-0-113-genericubuntu-upgrade-linux-image-5-15-0-113-generic-64kubuntu-upgrade-linux-image-5-15-0-113-generic-lpaeubuntu-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-lts-20-04ubuntu-upgrade-linux-image-aws-lts-22-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-fde-lts-22-04ubuntu-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-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-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-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-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-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-upgrade-linux-image-oem-20-04cubuntu-upgrade-linux-image-oem-20-04dubuntu-upgrade-linux-image-oem-24-04ubuntu-upgrade-linux-image-oem-24-04aubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-oracle-lts-22-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-virtual-hwe-24-04ubuntu-upgrade-linux-image-xilinx-zynqmp
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