CVE-2026-52791
CVE-2026-52791: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium4.7
Medium [CVE-2026-52791] Privilege Escalation Vulnerability via SUID/SGID Bit Preservation
CVE-2026-52791Source published Source updated
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. This vulnerability allows a low-privileged process to retain SUID (Set User ID) and SGID (Set Group ID) permissions on files after they are truncated or opened with the O_TRUNC flag. This can enable a local attacker to manipulate file permissions, potentially leading to privilege escalation within the system. On currently supported Red Hat Enterprise Linux releases (RHEL >= 8.5 / RHEL 9 / RHEL 10), rootless Podman uses native kernel overlayfs by…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
1 more entries in the full advisory.
- Source-reported affected versions
- < 1.17
- Source-reported fixed versions
- 1.17
- Mitigation guidance
- Avoid configuring fuse-overlayfs as the storage mount_program for rootless Podman/Buildah where native overlayfs support is available (this is not the default on supported RHEL releases). Ensure container images do not ship world- or group-writable files with the SUID or SGID bit set. No other mitigation is available prior to upgrading to fuse-overlayfs >= 1.17.
Android app · Google Play
Monitor future Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.