Vulnerability Details CVE-2024-53075
In the Linux kernel, the following vulnerability has been resolved:
riscv: Prevent a bad reference count on CPU nodes
When populating cache leaves we previously fetched the CPU device node
at the very beginning. But when ACPI is enabled we go through a
specific branch which returns early and does not call 'of_node_put' for
the node that was acquired.
Since we are not using a CPU device node for the ACPI code anyways, we
can simply move the initialization of it just passed the ACPI block, and
we are guaranteed to have an 'of_node_put' call for the acquired node.
This prevents a bad reference count of the CPU device node.
Moreover, the previous function did not check for errors when acquiring
the device node, so a return -ENOENT has been added for that case.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 10.3%
CVSS Severity
CVSS v3 Score 5.5
References
Products affected by CVE-2024-53075
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cpe:2.3:o:linux:linux_kernel:6.11
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cpe:2.3:o:linux:linux_kernel:6.11.1
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cpe:2.3:o:linux:linux_kernel:6.11.2
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cpe:2.3:o:linux:linux_kernel:6.11.3
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cpe:2.3:o:linux:linux_kernel:6.11.4
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cpe:2.3:o:linux:linux_kernel:6.11.5
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cpe:2.3:o:linux:linux_kernel:6.11.6
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cpe:2.3:o:linux:linux_kernel:6.12