CVE-2026-64145

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: wilc1000: fix dma_buffer leak on bus acquire failure

wilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at the top of the function and uses a 'fail:' label to free it via kfree(dma_buffer) on error.

All later error paths correctly use 'goto fail' to route through this cleanup. However, the early failure path after the first acquire_bus() call uses a bare 'return ret;', which leaks dma_buffer whenever the bus acquire fails.

Replace the early return with goto fail so the existing cleanup path runs.

Found via a custom Coccinelle semantic patch hunting for kmalloc'd locals leaked on early-return error paths in driver firmware-download code.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5
• https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe
• https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69

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