CVE-2026-52791

UNKNOWN 0.0

fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-266
Vendor	containers
Product	fuse-overlayfs
Published	Jul 29, 2026

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Affected Versions

containers / fuse-overlayfs

< 1.17

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/containers/fuse-overlayfs/security/advisories/GHSA-2cc4-p72c-v85h github.com: https://github.com/containers/fuse-overlayfs/commit/97e0d968a782fc259ebde112db1e9b9ff1ad724f github.com: https://github.com/containers/fuse-overlayfs/releases/tag/v1.17