CVE-2024-53075 - "RISC-V Linux Kernel CPU Node Reference Count Vulnerability"

CVE ID : CVE-2024-53075
Published : Nov. 19, 2024, 6:15 p.m. | 24 minutes ago
Description : 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.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...