This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-52791 →

DEBIAN-CVE-2026-52791

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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 fuse-overlayfs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 fuse-overlayfs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 fuse-overlayfs

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org