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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-68288 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: storage: Fix memory leak in USB bulk transport A kernel memory leak was identified by the 'ioctl_sg01' test from Linux Test Project (LTP). The following bytes were mainly observed: 0x53425355. When USB storage devices incorrectly skip the data phase with status data, the code extracts/validates the CSW from the sg buffer, but fails to clear it afterwards. This leaves status protocol data in srb's transfer buffer, such as the US_BULK_CS_SIGN 'USBS' signature observed here. Thus, this can lead to USB protocols leaks to user space through SCSI generic (/dev/sg*) interfaces, such as the one seen here when the LTP test requested 512 KiB. Fix the leak by zeroing the CSW data in srb's transfer buffer immediately after the validation of devices that skip data phase. Note: Differently from CVE-2018-1000204, which fixed a big leak by zero- ing pages at allocation time, this leak occurs after allocation, when USB protocol data is written to already-allocated sg pages.


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.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0f18eac44c5668204bf6eebb01ddb369ac56932b kernel.org
https://git.kernel.org/stable/c/41e99fe2005182139b1058db71f0d241f8f0078c kernel.org
https://git.kernel.org/stable/c/467fec3cefbeb9e3ea80f457da9a5666a71ca0d0 kernel.org
https://git.kernel.org/stable/c/4ba515dfff7eeca369ab85cdbb3f3b231c71720c kernel.org
https://git.kernel.org/stable/c/5b815ddb3f5560fac35b16de3a2a22d5f81c5993 kernel.org
https://git.kernel.org/stable/c/83f0241959831586d9b6d47f6bd5d3dec8f43bf0 kernel.org
https://git.kernel.org/stable/c/cb1401b5bcc2feb5b038fc4b512e5968b016e05e kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-68288
NVD Published Date:
12/16/2025
NVD Last Modified:
04/14/2026
Source:
kernel.org