kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF

A flaw was found in the Linux kernel's eventpoll mechanism. A Use-After-Free UAF vulnerability, where the system attempts to access memory after it has been freed, can occur during the removal of a file. A local attacker could exploit this race condition to corrupt memory, potentially leading to...

Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50372)

The remote Oracle Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-50372 advisory. - net/sched: fix pedit partial COW leading to page cache corruption Rajat Gupta CVE-2026-46331 - eventpoll: fix epremove struct eventpoll / struc...

Unbreakable Enterprise kernel security update

6.12.0-204.92.4.2 - KVM: x86: Fix shadow paging use-after-free due to unexpected role Paolo Bonzini Orabug: 39673880 - net/sched: fix pedit partial COW leading to page cache corruption Rajat Gupta CVE-2026-46331 - netsched: actpedit: use RCU in tcfpeditdump Eric Dumazet Orabug: 39668752 -...

SUSE-SU-2026:2632-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: eventpoll: Deferring the epfree function in eventpoll.c to a RCU callback during a grace period. In certain situations, epfree in eventpoll.c will free the epi-ep structure while it is still being used by another concurrent threa...

Unbreakable Enterprise kernel security update

6.12.0-203.76.7.5 - uek-rpm: avoid final module link in early FIPS symvers pass Sherry Yang Orabug: 39563330 - netfilter: nftables: unconditionally bump set-nelems before insertion Pablo Neira Ayuso Orabug: 39562729 CVE-2026-23272 6.12.0-203.76.7.4 - net: bonding: fix use-after-free in...

CVE-2026-46242

A flaw was found in the Linux kernel's eventpoll mechanism. A Use-After-Free UAF vulnerability, where the system attempts to access memory after it has been freed, can occur during the removal of a file. A local attacker could exploit this race condition to corrupt memory, potentially leading to...

SUSE CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

UBUNTU-CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242 eventpoll: fix ep_remove struct eventpoll / struct file UAF

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242 eventpoll: fix ep_remove struct eventpoll / struct file UAF

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

CVE-2026-46242

Summary (CVE-2026-46242) : The Linux kernel contains a fix for a UAF in eventpoll related to ep_remove. The bug arose when ep_remove_file() cleared file->f_ep under file->f_lock but continued using @file inside the critical section, allowing a concurrent path to reach freed memory via f_op-...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the epremove function in eventpoll. This function continues to use @file after clearing file-fep,...

PT-2026-45095

Name of the Vulnerable Software and Affected Versions Linux kernel versions 6.4 through 6.12.67 Description A race condition in the epoll subsystem leads to a use-after-free UAF scenario. The ep remove function via ep remove file clears file-f ep under file-f lock but continues to use the @file...

Linux Distros Unpatched Vulnerability : CVE-2026-46242

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fs/eventpoll: Fixed an infinite busy loop after the timeout has expired. After the commit 0a65bc27bd64 “eventpoll: Sets the epoll timeout if it’s in the future”, the following program would immediately enter a busy loop in the...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: aio: Fixed a use-after-free issue due to missing POLFREE handling. signalfdpoll and binderpoll are special because they use a waitqueue whose lifetime is the current task, rather than the struct file as is normally the case. This...