Description
fuse-overlayfs is an implementation of overlayfs in FUSE for rootless containers. Prior to 1.17, the release-1.x C branch preserves SUID and SGID mode bits in main.c during open(O_TRUNC) and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with mode 4777. This issue is fixed in version 1.17.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| containers | fuse-overlayfs | < 1.17 | — |
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 | fuse-overlayfs | No fix yet | — |
| Debian 13 | fuse-overlayfs | No fix yet | — |
| Debian 12 | fuse-overlayfs | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | fuse-overlayfs | No fix yet | — |
| Ubuntu 26.04 LTS | fuse-overlayfs | No fix yet | — |
| Ubuntu 24.04 LTS | fuse-overlayfs | No fix yet | — |
| Ubuntu 22.04 LTS | fuse-overlayfs | No fix yet | — |
| Ubuntu 20.04 LTS | fuse-overlayfs | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | fuse-overlayfs | 1.17-1.hum1 | RHSA-2026:52805 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | fuse-overlayfs | 1.1.2-150100.3.14.1 | SUSE-SU-2026:4026-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | fuse-overlayfs | 1.15-160000.3.1 | SUSE-SU-2026:23618-1 |
| SLES 16.0 | fuse-overlayfs | 1.15-160000.3.1 | SUSE-SU-2026:23618-1 |
| SLE Micro 6.2 | fuse-overlayfs | 1.15-160000.3.1 | SUSE-SU-2026:23469-1 |
| SLE Micro 6.0 | fuse-overlayfs | 1.12-2.1 | SUSE-SU-2026:23252-1 |
| SLE Micro 5.5 | fuse-overlayfs | 1.1.2-150100.3.14.1 | SUSE-SU-2026:4026-1 |
| SLE Micro 5.4 | fuse-overlayfs | 1.1.2-150100.3.14.1 | SUSE-SU-2026:4026-1 |
| SLE Micro 5.3 | fuse-overlayfs | 1.1.2-150100.3.14.1 | SUSE-SU-2026:4026-1 |
| SUSE Enterprise Storage 7.1 | fuse-overlayfs | 1.1.2-150100.3.14.1 | SUSE-SU-2026:4026-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | fuse-overlayfs | 1.17-1.1 | openSUSE-SU-2026:11461-1 |
| openSUSE Leap 16.0 | fuse-overlayfs | 1.15-160000.3.1 | openSUSE-SU-2026:21753-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | fuse-overlayfs | No fix yet | — |
Advisories 7
- SUSE-SU-2026:23618-1 Security update for fuse-overlayfs SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23469-1 Security update for fuse-overlayfs SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4026-1 Security update for fuse-overlayfs SUSE / openSUSE Security Updates · Sep 13, 2026
- openSUSE-SU-2026:21753-1 Security update for fuse-overlayfs SUSE / openSUSE Security Updates · Sep 9, 2026
- RHSA-2026:52805 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Sep 9, 2026
- SUSE-SU-2026:23252-1 Security update for fuse-overlayfs SUSE / openSUSE Security Updates · Aug 27, 2026
- openSUSE-SU-2026:11461-1 fuse-overlayfs-1.17-1.1 on GA media SUSE / openSUSE Security Updates · Aug 7, 2026