CVE-2024-27043

2024-05-0100:00:00

ubuntu.com

linux kernel

use-after-free vulnerability

media

dvbdev

7.6 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.2%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux< anyUNKNOWN
ubuntu22.04noarchlinux< 5.15.0-112.122UNKNOWN
ubuntu23.10noarchlinux< anyUNKNOWN
ubuntu24.04noarchlinux< 6.8.0-35.35UNKNOWN
ubuntu20.04noarchlinux-aws< anyUNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1063.69UNKNOWN
ubuntu23.10noarchlinux-aws< anyUNKNOWN
ubuntu24.04noarchlinux-aws< 6.8.0-1009.9UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1063.69~20.04.1UNKNOWN
ubuntu22.04noarchlinux-aws-6.5< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	20.04	noarch	linux	< any	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-112.122	UNKNOWN
ubuntu	23.10	noarch	linux	< any	UNKNOWN
ubuntu	24.04	noarch	linux	< 6.8.0-35.35	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1063.69	UNKNOWN
ubuntu	23.10	noarch	linux-aws	< any	UNKNOWN
ubuntu	24.04	noarch	linux-aws	< 6.8.0-1009.9	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.15	< 5.15.0-1063.69~20.04.1	UNKNOWN
ubuntu	22.04	noarch	linux-aws-6.5	< any	UNKNOWN