Description
An unspecified udev rule in the Debian fuse package in jessie before 2.9.3-15+deb8u2, in stretch before 2.9.5-1, and in sid before 2.9.5-1 sets world-writable permissions for the /dev/cuse character device, which allows local users to gain privileges via a character device in /dev, related to an ioctl.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | fuse | 2.9.5-1 | — |
| Debian 12 | fuse | 2.9.5-1 | — |
| Debian 8 | fuse | 2.9.3-15+deb8u2 | DSA-3451-1 |
Advisories 1
- DSA-3451-1 fuse - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-3451 vendor-advisory