PT-2024-11450 · Linux+6 · Linux Kernel+6
Zheyu Ma
·
Published
2021-10-17
·
Updated
2024-08-20
·
CVE-2021-47456
CVSS v3.1
8.4
High
| Vector | AV:L/AC:L/PR:N/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 (UAF) vulnerability in the Linux kernel, specifically in the
peak pci remove() function. When the peek pci module is removed, referencing the chan variable again after releasing the dev variable can cause a UAF. The vulnerability is fixed by releasing the dev variable later. Technical details about the exploitation include the peak pci remove() function and the chan and dev variables.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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Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linux Kernel
Red Hat
Rocky Linux
Suse