Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2022-50034

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
18/06/2025
Last modified:
13/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> usb: cdns3 fix use-after-free at workaround 2<br /> <br /> BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac<br /> <br /> cdns3_wa2_remove_old_request()<br /> {<br /> ...<br /> kfree(priv_req-&gt;request.buf);<br /> cdns3_gadget_ep_free_request(&amp;priv_ep-&gt;endpoint, &amp;priv_req-&gt;request);<br /> list_del_init(&amp;priv_req-&gt;list);<br /> ^^^ use after free<br /> ...<br /> }<br /> <br /> cdns3_gadget_ep_free_request() free the space pointed by priv_req,<br /> but priv_req is used in the following list_del_init().<br /> <br /> This patch move list_del_init() before cdns3_gadget_ep_free_request().

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.3 (including) 5.4.211 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.138 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.63 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 5.19.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools