CVE-2026-64145
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.
- Score
- CVSS 3.1 7.8 High
- Status
- Analyzed - 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- Published
- 2026-07-19
- Last modified
- 2026-07-19
- Weaknesses
- CWE-787
Affected products
References
- https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe
- https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5
- https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69
