Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: cdns3 fix use-after-free at workaround 2 BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac cdns3_wa2_remove_old_request() { ... kfree(priv_req->request.buf); cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ^^^ use after free ... } cdns3_gadget_ep_free_request() free the space pointed by priv_req, but priv_req is used in the following list_del_init(). This patch move list_del_init() before cdns3_gadget_ep_free_request().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6bbf87a131edd39040974f3843ff97e89310ebde before e65d9b7147d7be3504893ca7dfb85286bda83d40; affected 6bbf87a131edd39040974f3843ff97e89310ebde before 6d7ac60098b206d0472475b666cb09d556bec03d; affected 6bbf87a131edd39040974f3843ff97e89310ebde before c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a; affected 6bbf87a131edd39040974f3843ff97e89310ebde before 6fd50446e7c9a98b4bcf96815f5c9602a16ea472; affected 6bbf87a131edd39040974f3843ff97e89310ebde before 7d602f30149a117eea260208b1661bc404c21dfd |
| Linux / Linux | affected 5.4; unaffected 0 before 5.4; unaffected 5.4.211 through 5.4.*; unaffected 5.10.138 through 5.10.*; unaffected 5.15.63 through 5.15.*; unaffected 5.19.4 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40
- https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d
- https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a
- https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472
- https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd