CVE-2026-64145
Description
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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 1241c5650ff7a0236cebb89acca8aade48839fd6 < 95c82d498d74c4e587db30021ca1aec90e29b5a5, 1241c5650ff7a0236cebb89acca8aade48839fd6 < 32d7584441b9ecb279a03653b432612546e5efbe, 1241c5650ff7a0236cebb89acca8aade48839fd6 < dd7b6a8671939708cc4b7a46786d8c11297e8f69 |
| Linux | Linux | — | 6.13, 0 < 6.13, 6.18.34 ≤ 6.18.*, 7.0.11 ≤ 7.0.* … |
References (3)