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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-40315 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Fix epfile null pointer access after ep enable. A race condition occurs when ffs_func_eps_enable() runs concurrently with ffs_data_reset(). The ffs_data_clear() called in ffs_data_reset() sets ffs->epfiles to NULL before resetting ffs->eps_count to 0, leading to a NULL pointer dereference when accessing epfile->ep in ffs_func_eps_enable() after successful usb_ep_enable(). The ffs->epfiles pointer is set to NULL in both ffs_data_clear() and ffs_data_close() functions, and its modification is protected by the spinlock ffs->eps_lock. And the whole ffs_func_eps_enable() function is also protected by ffs->eps_lock. Thus, add NULL pointer handling for ffs->epfiles in the ffs_func_eps_enable() function to fix issues


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1c0dbd240be3f87cac321b14e17979b7e9cb6a8f kernel.org
https://git.kernel.org/stable/c/30880e9df27332403dd638a82c27921134b3630b kernel.org
https://git.kernel.org/stable/c/9ec40fba7357df2d36f4c2e2f3b9b1a4fba0a272 kernel.org
https://git.kernel.org/stable/c/b00d2572c16e8e59e979960d3383c2ae9cebd195 kernel.org
https://git.kernel.org/stable/c/c53e90563bc148e4e0ad09fe130ba2246d426ea6 kernel.org
https://git.kernel.org/stable/c/cfd6f1a7b42f62523c96d9703ef32b0dbc495ba4 kernel.org
https://git.kernel.org/stable/c/d62b808d5c68a931ad0849a00a5e3be3dd7e0019 kernel.org
https://git.kernel.org/stable/c/fc1141a530dfc91f0ee19b7f422a2d24829584bc kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-40315
NVD Published Date:
12/07/2025
NVD Last Modified:
12/07/2025
Source:
kernel.org