Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Fix fence cleanup in ffs_dmabuf_transfer() error paths The error paths for endpoint-disabled (ESHUTDOWN) and request-allocation failure (ENOMEM) in ffs_dmabuf_transfer() jump to err_fence_put which calls dma_fence_put() on the fence. However, at that point the fence has only been kmalloc'd — dma_fence_init() has not been called yet, so the refcount and the fence ops are uninitialized. Calling dma_fence_put() on such an object leads to undefined behavior. Use kfree() instead, since the fence is just a plain allocation at this stage, and rename the label to err_fence_free to reflect the actual cleanup action.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7b07a2a7ca02a20124b552be96c5a56910795488 before be539138d9a187af3b884525a395db10797c64f1; affected 7b07a2a7ca02a20124b552be96c5a56910795488 before 5fd8baacc7dc477df9cac61b45491840247a9b1e; affected 7b07a2a7ca02a20124b552be96c5a56910795488 before 58952c83dfe6ea3294a74734d2d1018c1120779a; affected 7b07a2a7ca02a20124b552be96c5a56910795488 before 621707dc67c9846fd876d7579ec951d92aa033f1 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.