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 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.

CVSS

No CVSS.

References

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

Configurations

No configuration.

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) fuse-overlayfs es una implementación de overlayfs en FUSE para contenedores sin privilegios de root. Antes de la 1.17, la rama C release-1.x conserva los bits de modo SUID y SGID en main.c durante el manejo de open(O_TRUNC) y truncate en un archivo copiado a la capa superior, permitiendo que un proceso con pocos privilegios deje el archivo de la capa superior con el modo 4777. Este problema está corregido en la versión 1.17.

Information

Published : 2026-07-29 17:16

Updated : 2026-10-24 13:10

NVD link : CVE-2026-52791

Mitre link : CVE-2026-52791

CVE.ORG link : CVE-2026-52791

JSON object : View

Products Affected

No product.

CWE

CWE-266

Incorrect Privilege Assignment

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