vulnerability

Oracle Linux: CVE-2024-27043: ELSA-2024-10281: kernel:4.18.0 security update (MODERATE)

Severity
5
CVSS
(AV:L/AC:M/Au:M/C:P/I:P/A:C)
Published
May 1, 2024
Added
Nov 27, 2024
Modified
Dec 3, 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

oracle-linux-upgrade-kernel
Title
NEW

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