VULNERABILITY INTELLIGENCE
CVE-2026-52791
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-07-29
Last modified2026-10-24
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.
Weakness classification
- security-advisories@github.com: CWE-266