Riskcovery

CVE-2024-53075

riscv: Prevent a bad reference count on CPU nodes

State
Published
Severity
Not scored
Published
Nov 19, 2024
Updated
May 11, 2026
Reserved
Nov 19, 2024

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ebccacb0b599fa788a16eff35a7de14621f56804 to before 80aec5a855106c668b5978c48e789f010198b832Affected
  • 604f32ea6909b0ebb8ab0bf1ab7dc66ee3dc8955 to before 303846a3dc275e35fbb556d72f1e356ba669e4f8Affected
  • 604f32ea6909b0ebb8ab0bf1ab7dc66ee3dc8955 to before 37233169a6ea912020c572f870075a63293b786aAffected
LinuxLinux
  • 6.11Affected
  • before 6.11Not affected
  • 6.11.7 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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