Improper Preservation of Permissions The advisory has been revoked - it doesn't affect any version of package rhcos (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-RHCOS-18475613
- published31 Jul 2026
- disclosed29 Jul 2026
Introduced: 29 Jul 2026
CVE-2026-52791 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rhcos package and not the rhcos package as distributed by RHEL.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2508489
- https://access.redhat.com/security/cve/CVE-2026-52791
- 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