In the Linux kernel, the following vulnerability has been resolved: usb: class: cdc-wdm: fix reordering issue in read code path Quoting the bug report: Due to compiler optimization or CPU out-of-order execution, the desc->length update can be reordered before the memmove. If this happens, wdm_read() can see the new length and call copy_to_user() on uninitialized memory. This also violates LKMM data race rules [1]. Fix it by using WRITE_ONCE and memory barriers.
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | 12.0.3 |
| Linux | Linux | 12.1.0 |
| Linux | Linux | Google Chrome prior to 59.0.3071.86 for Linux, Windows and Mac, and 59.0.3071.92 for Android |
| Linux | Linux | Cisco Finesse for Cisco Unified Contact Center Enterprise |