CVE-2025-39888

high

Description

In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in fuse_dev_do_write. When the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages and there is an offset, the oob is triggered. Add a loop termination condition to prevent overruns.

References

https://git.kernel.org/stable/c/9d81ba6d49a7457784f0b6a71046818b86ec7e44

https://git.kernel.org/stable/c/623719227b114d73a2cee45f1b343ced63ce09ec

Details

Source: Mitre, NVD

Published: 2025-09-23

Updated: 2025-09-24

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00018