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CVE-2023-52679 is a double-free vulnerability in the Linux kernel Open Firmware/device-tree code, in of_parse_phandle_with_args_map(). The function’s inner loop releases the reference held in new through of_node_put(new), assuming new is NULL during its first iteration. Across outer-loop iterations, new can retain a stale value after assignment to cur, allowing an already released reference to be released again. The upstream fix clears new after its value is assigned to cur and adds unit tests that detect and exercise the affected path. The flaw was introduced in Linux kernel 4.17.
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A locally exploitable vulnerability requiring low privileges, with high potential impact to confidentiality, integrity, and availability according to the supplied CVSS v3 vector.
Linux kernel device-tree parsing double-free vulnerability in of_parse_phandle_with_args_map.
Unknown
A low-severity Linux kernel double-free vulnerability in the Open Firmware/device-tree (of) phandle argument mapping path, specifically of_parse_phandle_with_args_map.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
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