CVE-2026-72179
N/A
N/A
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < 2560c97f63bb99b26d9f19b23a4f66ea24c9dc14 | affected |
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < 51afb7da697b698996351740b4f39fb05ce2afd4 | affected |
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < 880ac50b0bfae06d7ab5f1843253adfb86aa173a | affected |
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < f322955d9a1c344ed943752f05aacea7bc22e025 | affected |
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < 36e4843fe39ea2f17f4de6d59fba26271916c184 | affected |
| Linux | Linux | 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f < bf4a195f063b0a0805c1417f6aad1dd32ea48f0f | affected |
| Linux | Linux | 5.0 | affected |
| Linux | Linux | 0 < 5.0 | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/2560c97f63bb99b26d9f19b23a4f66ea24c9dc14
- https://git.kernel.org/stable/c/51afb7da697b698996351740b4f39fb05ce2afd4
- https://git.kernel.org/stable/c/880ac50b0bfae06d7ab5f1843253adfb86aa173a
- https://git.kernel.org/stable/c/f322955d9a1c344ed943752f05aacea7bc22e025
- https://git.kernel.org/stable/c/36e4843fe39ea2f17f4de6d59fba26271916c184
- https://git.kernel.org/stable/c/bf4a195f063b0a0805c1417f6aad1dd32ea48f0f
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