PT-2024-3371 · Linux+10 · Linux Kernel+10
Zhipeng Lu
·
Published
2024-02-07
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Updated
2025-09-29
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CVE-2024-27043
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions:
Linux kernel (affected versions not specified)
Description:
The issue is related to a use-after-free vulnerability in the
dvb register device function. In this function, *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. This can occur 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, triggering a use-after-free.Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu