CVE-2026-31604
wifi: rtw88: fix device leak on probe failure
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on all probe errors (e.g. when descriptor parsing fails). Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks.
INFO
Published Date :
April 24, 2026, 3:16 p.m.
Last Modified :
April 29, 2026, 7:21 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Drop the redundant device reference in the probe function.
- Ensure all probe error paths release the device reference.
- Review other drivers for similar reference leaks.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-31604.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31604 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-31604
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31604 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31604 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.24 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.0.1 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.83 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.136 Added Reference Type kernel.org: https://git.kernel.org/stable/c/25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/89a9c1bc7d797120bcc290864e0cb10a440a677f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a4f4371d194dfa5473cc961f86194084b1b13a69 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/af7307e96dad00bcc2675dac650d8558a52f2c6f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bbb15e71156cd9f5e1869eee7207a06ea8e96c39 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f632987306bce9242cdfcf911ee0b2c9455e05a3 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 27, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/f632987306bce9242cdfcf911ee0b2c9455e05a3 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 27, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/bbb15e71156cd9f5e1869eee7207a06ea8e96c39 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 24, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on all probe errors (e.g. when descriptor parsing fails). Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks. Added Reference https://git.kernel.org/stable/c/25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a Added Reference https://git.kernel.org/stable/c/89a9c1bc7d797120bcc290864e0cb10a440a677f Added Reference https://git.kernel.org/stable/c/a4f4371d194dfa5473cc961f86194084b1b13a69 Added Reference https://git.kernel.org/stable/c/af7307e96dad00bcc2675dac650d8558a52f2c6f