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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 23, 2025
First seenSep 23, 2025
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- linux linux_kernel6.16.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.16 ≤ v < 6.16.8, 6.17 | 6.16.8 |
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