CVE-2026-52791

A flaw was found in fuse-overlayfs, a component used for rootless containers. 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 OTRUNC flag. This can enable a local attacker to...

CVE-2026-64266

A flaw was found in the Linux kernel's FUSE Filesystem in Userspace component. The fusereffolio function does not properly re-lock a request after unlocking it, which can lead to a use-after-free vulnerability. A local attacker could exploit this flaw to potentially execute arbitrary code or caus...

CVE-2026-64258

A flaw was found in the fuse-uring component of the Linux kernel. When a copy operation to the userspace ring buffer fails, a request can be terminated improperly, leading to a NULL pointer dereference. This vulnerability could allow a local attacker to cause a system crash, resulting in a Denial...

CVE-2026-64267

A flaw was found in the Linux kernel's Filesystem in Userspace FUSE component. On 32-bit systems, an integer overflow vulnerability exists in the handling of FUSENOTIFYPRUNE messages. A malicious FUSE daemon or a local user could craft a prune notification with a specific count, causing an intege...

AZL-94145 CVE-2026-52791 affecting package fuse-overlayfs 1.14-1

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

UBUNTU-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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-64262

A flaw was found in the fuse-uring component of the Linux kernel. When iouring task work is canceled, the system fails to properly end a fusereq FUSE request. This can cause the originating system call thread to block indefinitely, leading to a Denial of Service DoS for the affected system...

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-52791 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-52791 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-52791 fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-52791

Fuse-overlayfs (overlayfs in FUSE for rootless containers) before version 1.17 on the release-1.x C branch preserves SUID/SGID mode bits in main.c during open(O_TRUNC) and truncate handling on a copied-up file. This may allow a low-privilege process to leave the upper-layer file with mode 4777. T...

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

CVE-2026-64263

A flaw was found in the Linux kernel's fuse-uring component. This vulnerability arises from the incorrect handling of cancelled entries, which are moved to a list where a subsequent operation unconditionally attempts to access a null pointer. A local attacker could exploit this flaw to trigger a...

CVE-2026-64259

A flaw was found in the Linux kernel's fuse-uring component. A local attacker could exploit a race condition by sending specially crafted requests before they are fully processed. This could lead to a use-after-free vulnerability, potentially allowing for arbitrary code execution or denial of...

CVE-2026-52791: Incorrect Privilege Assignment

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 openOTRUNC and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with...

PT-2026-65846

Name of the Vulnerable Software and Affected Versions fuse-overlayfs versions prior to 1.17 Description In the release-1.x C branch, the software preserves SUID Set User ID and SGID Set Group ID mode bits in the main.c file during openO TRUNC and truncate handling on a copied-up file. This behavi...

NewStart CGSL MAIN 6.06 : glusterfs Vulnerability (NS-SA-2026-0053)

The remote NewStart CGSL host, running version MAIN 6.06, has glusterfs packages installed that are affected by a vulnerability: - In Gluster GlusterFS 11.0, there is an xlators/mount/fuse/src/fuse-bridge.c notify stack-based buffer over-read. CVE-2023-26253 Note that Nessus has not tested for...