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CVE-2026-52791

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

Description (CNA)

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 (CNA)

Vendor / productVersions
containers / fuse-overlayfsaffected < 1.17

CWE

CWE-266

References

ADP enrichment

CISA-ADP

No English description supplied.