Description
Memory leak in the cuse_channel_release function in fs/fuse/cuse.c in the Linux kernel before 4.4 allows local users to cause a denial of service (memory consumption) or possibly have unspecified other impact by opening /dev/cuse many times.
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 14 | linux | 4.4.2-1 | — |
| Debian 13 | linux | 4.4.2-1 | — |
| Debian 12 | linux | 4.4.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-30.35~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-54.1 | SUSE-SU-2016:1707-1 |
Advisories 1
- SUSE-SU-2016:1707-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20160302 CVE-2015-1339: Linux Kernel: memory exhaustion via CUSE driver mailing-list
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2c5816b4beccc8ba709144539f6fdd764f8fa49c
- https://bugzilla.redhat.com/show_bug.cgi?id=1314331
- https://github.com/torvalds/linux/commit/2c5816b4beccc8ba709144539f6fdd764f8fa49c
- SUSE-SU-2016:1707 vendor-advisory
- https://bugzilla.novell.com/show_bug.cgi?id=969356
- openSUSE-SU-2016:1008 vendor-advisory
- https://security-tracker.debian.org/tracker/CVE-2015-1339