vulnerability
Red Hat: CVE-2022-50034: kernel: usb: cdns3 fix use-after-free at workaround 2
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Jun 18, 2025 | Jul 9, 2025 | Aug 4, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:S/C:C/I:C/A:C)
Published
Jun 18, 2025
Added
Jul 9, 2025
Modified
Aug 4, 2025
Description
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().
Solution
no-fix-redhat-rpm-package
References
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