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Vulnerabilities CVE-2023-52679

CVE-2023-52679

High
Open
TLP:CLEAR

of: Fix double free in of_parse_phandle_with_args_map

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Description

In the Linux kernel, the following vulnerability has been resolved: of: Fix double free in of_parse_phandle_with_args_map In of_parse_phandle_with_args_map() the inner loop that iterates through the map entries calls of_node_put(new) to free the reference acquired by the previous iteration of the inner loop. This assumes that the value of "new" is NULL on the first iteration of the inner loop. Make sure that this is true in all iterations of the outer loop by setting "new" to NULL after its value is assigned to "cur". Extend the unittest to detect the double free and add an additional test case that actually triggers this path.

Details

CVSS Score
7.8
EPSS Score
0.25%

16.1th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 17, 2024
Last Modified
Aug 5, 2026
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