CVE-2026-90045
USB: gadget: ffs: fix mm lifetime handling
Description
In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending. This can result in a use-after-free if the task exits before completion handling finishes. Take a reference with mmgrab() when queuing the read request and release it with mmdrop() on request completion.
INFO
Published Date :
Sept. 16, 2026, 11:17 a.m.
Last Modified :
Oct. 30, 2026, 1:20 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 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Take reference with mmgrab() when queuing read request.
- Release reference with mmdrop() on request completion.
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-2026-90045.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-90045 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-2026-90045
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-2026-90045 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-90045 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 30, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> Added Reference https://git.kernel.org/stable/c/68895e50c2250d9edd6e0a5967bf351221fd88b4 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> Added Reference https://git.kernel.org/stable/c/aee2fde0f39e2b667084f4d5cc323a5c5543d733 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 19, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> -
CVE Translated by [email protected]
Sep. 28, 2026
Action Type Old Value New Value Added Translation Title: la biblioteca CGM_NIST_Loader.dll en JT2Go, Teamcenter Visualization, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: USB: gadget: ffs: corregir la gestión del ciclo de vida de mm io_data almacena un puntero a la mm_struct de la tarea remitente, pero actualmente no mantiene una referencia a ella mientras las solicitudes asíncronas están pendientes. Esto puede resultar en un uso después de liberación si la tarea finaliza antes de que termine el manejo de la finalización. Tomar una referencia con mmgrab() al encolar la solicitud de lectura y liberarla con mmdrop() al completarse la solicitud. -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 21, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> Added Reference https://git.kernel.org/stable/c/1625827648f4e1595ea6ba5521bc87ee5088b32b -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending. This can result in a use-after-free if the task exits before completion handling finishes. Take a reference with mmgrab() when queuing the read request and release it with mmdrop() on request completion. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90045.json">CVE-2026-90045</a> Added Reference https://git.kernel.org/stable/c/5eb5c72c72fef76cb765ef1669b62b6a3ba1bfc8 Added Reference https://git.kernel.org/stable/c/7411de0ce3b45286de1de82526795658ea6eacb0 Added Reference https://git.kernel.org/stable/c/f3d31484b3f26d63c09e5569ebfaa1079a17f171