kernel: fanotify: fix false positive on permission events

A flaw was found in the Linux kernel's fanotify subsystem. This vulnerability allows for a bypass of permission checks because the fsnotifygetmarksafe function may incorrectly return false for marks on unrelated groups. This could enable an attacker to perform unauthorized actions by circumventin...

fsmon

fsmon Low level filesystem monitor utility for Linux, Android, iOS and macOS. Author : pancake @ nowsecure License : MIT Designed for System administrators and incident responders Security researchers and forensic analysts Developers debugging I/O-heavy applications Reverse engineers interested i...

kernel: fanotify: fix false positive on permission events

A flaw was found in the Linux kernel's fanotify subsystem. This vulnerability allows for a bypass of permission checks because the fsnotifygetmarksafe function may incorrectly return false for marks on unrelated groups. This could enable an attacker to perform unauthorized actions by circumventin...

CVE-2026-89600

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

CVE-2026-89595

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

Linux Distros Unpatched Vulnerability : CVE-2026-89600

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer t...

Linux Distros Unpatched Vulnerability : CVE-2026-89595

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if...

CVE-2026-89595

A flaw was found in the Linux kernel's fsnotify subsystem, affecting fanotify and inotify. A race condition can occur during concurrent updates to event marks, where the object mask becomes stale. This can lead to a denial of service or information disclosure, as events such as file modifications...

CVE-2026-89600

A flaw was found in the Linux kernel's fanotify subsystem. This use-after-free vulnerability occurs when the system attempts to report file range information after the memory holding that information has been released. A local attacker could potentially exploit this to read stale stack memory,...

CVE-2026-89595

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

AZL-100157 CVE-2026-89595 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

CVE-2026-89600

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

DEBIAN-CVE-2026-89600

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

DEBIAN-CVE-2026-89595

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

UBUNTU-CVE-2026-89600

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

UBUNTU-CVE-2026-89595

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

CVE-2026-89600

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

CVE-2026-89600

CVE-2026-89600 is a use-after-free vulnerability in the Linux kernel's fanotify subsystem . The root cause: fsnotify_pre_content() builds a file_range on the triggering task's stack, and fanotify_alloc_perm_event() stores a pointer to range.pos in a heap-allocated permission event. If a signal in...

CVE-2026-89600 fanotify: fix use-after-free of file range info

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...

EUVD-2026-76512

In the Linux kernel, the following vulnerability has been resolved: fanotify: fix use-after-free of file range info fsnotifyprecontent builds its filerange on the triggering task's stack. fanotifyallocpermevent saves a pointer to range.pos in the heap-allocated permission event so...