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...

UBUNTU-CVE-2026-52791

fuse-overlayfs is an implementation of overlayfs in FUSE for rootless...

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 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...

Linux Distros Unpatched Vulnerability : CVE-2026-52791

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

CVE-2026-64260

A flaw was found in the fuse-uring component of the Linux kernel. A race condition exists where the queue-stopped flag is not consistently checked under a lock. This can allow a struct fusereq to be prematurely freed while other operations are still in progress, potentially leading to memory...

CVE-2026-64265

A flaw was found in the Linux kernel's fuse component. When a fuse request is interrupted and then resent, a specific interrupt entry intrentry is not properly cleared. If the requesting task subsequently receives a fatal signal, this uncleared entry can lead to a use-after-free condition. This...

CVE-2026-64261

A flaw was found in the Linux kernel's fuse-uring component. This use-after-free vulnerability allows a local attacker to potentially achieve privilege escalation. The issue arises when the fuseuringasyncstopqueues function attempts to access memory that has already been freed, leading to...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: ext4: replace BUGON with proper error handling in ext4readinlinefolio CVE-2026-31451 In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache...

SUSE CVE-2026-64258

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreqqueue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend will set ent-fusereq to NULL but it will leave the entry...

SUSE CVE-2026-64259

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fusereq on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server iouringcmddone not called...

SUSE CVE-2026-64260

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue-stopped races and set/read that value under lock There are several readers of queue-stopped that check the value under lock, but fuseuringcommitfetch did not and actually the value was not set under the lo...