CVE-2025-40093

usb: gadget: f_ecm: Refactor bind path to use __free()

State: Published
Severity: 7.8 High
Published: Oct 30, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: f_ecm: Refactor bind path to use __free()

After an bind/unbind cycle, the ecm->notify_req is left stale. If a subsequent bind fails, the unified error label attempts to free this stale request, leading to a NULL pointer dereference when accessing ep->ops->free_request.

Refactor the error handling in the bind path to use the __free() automatic cleanup mechanism.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	da741b8c56d612b5dd26ffa31341911a5fea23ee to before d3745aaef19198d0c81637a7dd50ef53c4f879b7Affected da741b8c56d612b5dd26ffa31341911a5fea23ee to before 070f341d86cf2c098d63e484a86c7c1d2696a868Affected da741b8c56d612b5dd26ffa31341911a5fea23ee to before 15b9faf53ba8719700596e7ef78879ce200e8c2eAffected da741b8c56d612b5dd26ffa31341911a5fea23ee to before 4630c68bade82f087eaaab22e9a361da2f18d139Affected da741b8c56d612b5dd26ffa31341911a5fea23ee to before 42988380ac67c76bb9dff8f77d7ef3eefd50b7b5Affected
LinuxLinux	2.6.27Affected before 2.6.27Not affected 6.1.158 through 6.1.Not affected 6.6.114 through 6.6.Not affected 6.12.55 through 6.12.Not affected 6.17.5 through 6.17.Not affected 6.18 and laterNot affected

Product

Versions

LinuxLinux

da741b8c56d612b5dd26ffa31341911a5fea23ee to before d3745aaef19198d0c81637a7dd50ef53c4f879b7Affected
da741b8c56d612b5dd26ffa31341911a5fea23ee to before 070f341d86cf2c098d63e484a86c7c1d2696a868Affected
da741b8c56d612b5dd26ffa31341911a5fea23ee to before 15b9faf53ba8719700596e7ef78879ce200e8c2eAffected
da741b8c56d612b5dd26ffa31341911a5fea23ee to before 4630c68bade82f087eaaab22e9a361da2f18d139Affected
da741b8c56d612b5dd26ffa31341911a5fea23ee to before 42988380ac67c76bb9dff8f77d7ef3eefd50b7b5Affected

LinuxLinux

2.6.27Affected
before 2.6.27Not affected
6.1.158 through 6.1.*Not affected
6.6.114 through 6.6.*Not affected
6.12.55 through 6.12.*Not affected
6.17.5 through 6.17.*Not affected
6.18 and laterNot affected

References

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