PT-2024-8362 · Linux+9 · Linux Kernel+9
Christian A. Ehrhardt
·
Published
2024-01-09
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Updated
2025-09-29
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CVE-2023-52679
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 double free error in the
of parse phandle with args map function. This function has an inner loop that iterates through map entries and calls of node put(new) to free the reference acquired by the previous iteration. The problem arises from the assumption that the value of new is NULL on the first iteration of the inner loop. To fix this, the code sets new to NULL after its value is assigned to cur in all iterations of the outer loop. The unittest has been extended to detect the double free and an additional test case has been added to trigger this path. The vulnerability may allow an attacker to cause a denial of service.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Double Free
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu