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...

CVE-2026-58099

When copying knotes from a parent kqueue to a child, the copy code did not correctly exclude marker knotes used internally to track list traversal position before marking them as in-flux and releasing the kqueue lock. If another thread freed a marker while the lock was dropped, the subsequent...

CVE-2026-58100

The kqueue kernel module in FreeBSD is vulnerable to a memory safety issue involving an out-of-bounds read . The root cause is that kqueue_fork_copy_knote() indexes into the child's file descriptor table using a knote's file descriptor number without performing a bounds check . A race condition e...

CVE-2026-58100 Memory safety bugs in kqueue copy-on-fork implementation

kqueueforkcopyknote indexed into the child's file descriptor table using a knote's file descriptor number without a bounds check. Because the child's table is copied before knotes are transferred, a concurrent thread in the parent could grow the parent's table and register knotes with file...

CVE-2026-58099 Memory safety bugs in kqueue copy-on-fork implementation

When copying knotes from a parent kqueue to a child, the copy code did not correctly exclude marker knotes used internally to track list traversal position before marking them as in-flux and releasing the kqueue lock. If another thread freed a marker while the lock was dropped, the subsequent...

EUVD-2026-101856

When copying knotes from a parent kqueue to a child, the copy code did not correctly exclude marker knotes used internally to track list traversal position before marking them as in-flux and releasing the kqueue lock. If another thread freed a marker while the lock was dropped, the subsequent...

CVE-2026-58099

The FreeBSD kernel is vulnerable to memory safety bugs within the kqueue copy-on-fork implementation. Specifically, when copying knotes from a parent kqueue to a child, the copy code fails to exclude marker knotes before marking them as in-flux and releasing the kqueue lock. This race condition a...

Security Bulletin:Netty Unbounded File Descriptor Leak in Domain Socket Receives

Summary Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, nettyunixsocketrecvFd sets msgcontrol to char controlCMSGSPACEsizeofint line 940 — 24 bytes on 64-bit Linux. A peer-sent SCMRIGHTS cmsg carrying two...

FreeBSD : FreeBSD -- Memory safety bugs in kqueue copy-on-fork implementation (d725b228-bccc-11f1-906f-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the d725b228-bccc-11f1-906f-bc241121aa0a advisory. When copying knotes from a parent kqueue to a child, the copy code did not correctly exclude...

FreeBSD-SA-26:65.kqueue

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:65.kqueue Security Advisory The FreeBSD Project Topic: Memory safety bugs in kqueue copy-on-fork implementation Category: core Module: kqueue Announced:...

FreeBSD Security Advisory - FreeBSD-SA-26:65.kqueue

FreeBSD Security Advisory - Memory safety bugs in kqueue copy-on-fork implementation. An unprivileged local user may be able to exploit these races to escalate privileges...

FreeBSD -- Memory safety bugs in kqueue copy-on-fork implementation

Problem Description: When copying knotes from a parent kqueue to a child, the copy code did not correctly exclude marker knotes used internally to track list traversal position before marking them as in-flux and releasing the kqueue lock. If another thread freed a marker while the lock was droppe...

CVE-2026-58083

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition,...

EUVD-2026-62351

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition,...

CVE-2026-58083 Use-after-free in kqueue copy-on-fork

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition,...

CVE-2026-58083

A use-after-free vulnerability exists in the FreeBSD kernel within the kqueue event notification facility. During a fork operation using KQUEUE_CPONFORK mode, the kernel's process of copying knotes fails to account for timer-based filters firing before the copy is complete. This allows a knote to...

CVE-2026-58083 Use-after-free in kqueue copy-on-fork

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition,...

PT-2026-78316

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description A use-after-free issue exists in the kernel during the copying of knotes during a fork operation. A knote with a timer-based filter may fire and be enqueued on t...

CVE-2026-58083: Use After Free

While the kernel was copying knotes during fork, a knote with a timer-based filter could fire and be enqueued on the kqueue's active list before the copy was complete. The copy routine did not account for this and could enqueue the new knote a second time, corrupting the active list. In addition,...

netty-transport-native-epoll: netty-transport-native-kqueue: Netty: Denial of Service due to file descriptor leak in SCM_RIGHTS message handling

A flaw was found in Netty, a network application framework. A local attacker could exploit a vulnerability in the nettyunixsocketrecvFd function when handling SCMRIGHTS messages in Epoll or KQueue DomainSocketChannel with DomainSocketReadMode.FILEDESCRIPTORS enabled. Incorrect handling of file...