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.
Metrics
Affected Vendors & Products
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References
History
Wed, 29 Jul 2026 18:30:00 +0000
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ssvc
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Wed, 29 Jul 2026 16:45:00 +0000
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| 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. | |
| Title | fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC) | |
| Weaknesses | CWE-266 | |
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| Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-29T17:56:43.388Z
Reserved: 2026-06-08T18:02:19.731Z
Link: CVE-2026-52791
Vulnrichment
Updated: 2026-07-29T17:56:20.786Z
NVD
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Redhat
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OpenCVE Enrichment
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