Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-68288

usb: storage: Fix memory leak in USB bulk transport

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 83f0241959831586d9b6d47f6bd5d3dec8f43bf0affected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 4ba515dfff7eeca369ab85cdbb3f3b231c71720caffected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 467fec3cefbeb9e3ea80f457da9a5666a71ca0d0affected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < cb1401b5bcc2feb5b038fc4b512e5968b016e05eaffected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 0f18eac44c5668204bf6eebb01ddb369ac56932baffected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 5b815ddb3f5560fac35b16de3a2a22d5f81c5993affected
  • a45b599ad808c3c982fdcdc12b0b8611c2f92824 to < 41e99fe2005182139b1058db71f0d241f8f0078caffected
  • 582802e7c617cfb07cc15f280c128e6decbc57b8affected
  • 58b7ce6f9ef2367f86384b20458642945993b816affected
  • 93314640426ddb6af618d0802e622f6fa771792caffected
  • ad2518320bc440ed3db072e2444a1bb226a9cf7aaffected
  • d827bea2d18c07ba514f7d48cde49f90da9a1384affected
  • 39169410574503c6e901de1aa6eac5108475e017affected
  • 3.16.58 to < 3.17affected
  • 3.18.110 to < 3.19affected
  • 4.4.133 to < 4.5affected
  • 4.9.103 to < 4.10affected
  • 4.14.44 to < 4.15affected
  • 4.16.12 to < 4.17affected

Linux Linux

Default version status: affected

  • 4.17affected
  • 0 to < 4.17unaffected
  • 5.10.247 to ≤ 5.10.*unaffected
  • 5.15.197 to ≤ 5.15.*unaffected
  • 6.1.159 to ≤ 6.1.*unaffected
  • 6.6.119 to ≤ 6.6.*unaffected
  • 6.12.61 to ≤ 6.12.*unaffected
  • 6.17.11 to ≤ 6.17.*unaffected
  • 6.18 to ≤ *unaffected

References