CVE Catalog

CVE-2026-72179

Low risk· EPSS 11%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

In the Linux kernel for RISC-V architecture, there is a node reference leak in populate_cache_leaves. The while loop drops the reference to prev in each iteration, but if the loop terminates naturally with np == NULL, the last valid node in prev is not released. The fix changes the final of_node_put(np) to of_node_put(prev).

Risk Assessment

Reference leak can lead to improper memory management and potentially cause system stability issues.

Recommendation

Apply the kernel update containing this fix to prevent reference leaks in cacheinfo for RISC-V.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: riscv: cacheinfo: Fix node reference leak in populate_cache_leaves Currently, the while loop drops the reference to prev in each iteration. If the loop terminates early due to a break, the final of_node_put(np) correctly drops the reference to the current node. However, if the loop terminates naturally because np == NULL, calling of_node_put(np) is a no-op. This leaves the last valid node stored in prev without its reference dropped, resulting in a node reference leak. Fix this by changing the final `of_node_put(np)` to `of_node_put(prev)`.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS