Security Bulletin: IBM Operations Analytics - Log Analysis is affected by a TOCTOU weakness allowing active sessions to persist beyond a password change

Summary IBM Operations Analytics - Log Analysis contains a Time-Of-Check to Time-Of-Use TOCTOU weakness in its built-in user password management feature. The built-in authentication module of IBM Operations Analytics - Log Analysis is used by IBM Operations Analytics - Log Analysis as part of the...

Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Microsoft

PoC for the ThemeBleed CVE-2023-38146 exploit Windows 11 Them...

CVE-2026-45203 GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU

Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but befo...

CVE-2026-45203

A Time-of-check Time-of-use (TOCTOU) race condition exists in the GPU DDK within the rgxfw_hwperf_ufo() function. The vulnerability is caused because the system re-reads psCmdHeader->ui32CmdSize after the initial validation check but before it is used. This allows a malicious driver to modify ...

CVE-2026-45203: Time-of-check Time-of-use (TOCTOU) Race Condition

Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but befo...

CVE-2026-56676: Time-of-check Time-of-use (TOCTOU) Race Condition

9Router is an AI router & token saver. Prior to 0.5.2, 9router validates image URLs by resolving the host before fetching, but open-sse/translator/concerns/image.js performs the later server-side image fetch with a separate DNS resolution. An authenticated attacker with access to the LLM proxy ca...

EulerOS 2.0 SP12 : libcap (EulerOS-SA-2026-2539)

According to the versions of the libcap packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use TOCTOU race condition in the capsetfile function...

EulerOS 2.0 SP12 : util-linux (EulerOS-SA-2026-2635)

According to the versions of the util-linux packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check- Time-of-Use vulnerability has been...

EulerOS 2.0 SP12 : util-linux (EulerOS-SA-2026-2575)

According to the versions of the util-linux packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU Time-of-Check- Time-of-Use vulnerability has been...

ALPINE-CVE-2025-58151

varstored is a component of the Xapi toolstack handling UEFI Variables for a VM. It has a communication path with OVMF inside the VM involving mapping a buffer prepared by OVMF. Within varstored, there were insufficient compiler barriers, creating TOCTOU issues with data in the shared buffer. The...

CVE-2025-58151 varstored: TOCTOU issues with mapped guest memory

varstored is a component of the Xapi toolstack handling UEFI Variables for a VM. It has a communication path with OVMF inside the VM involving mapping a buffer prepared by OVMF. Within varstored, there were insufficient compiler barriers, creating TOCTOU issues with data in the shared buffer. The...

CVE-2026-58198: Time-of-check Time-of-use (TOCTOU) Race Condition

ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract uses a predictable home-rooted output directory /ubuntudata/ubuntudialogs with a check-then-create pattern followed by tar.extractallpath=self.datapath, allowing a...

CVE-2025-58151: Time-of-check Time-of-use (TOCTOU) Race Condition

varstored is a component of the Xapi toolstack handling UEFI Variables for a VM. It has a communication path with OVMF inside the VM involving mapping a buffer prepared by OVMF. Within varstored, there were insufficient compiler barriers, creating TOCTOU issues with data in the shared buffer. The...

CVE-2026-54777: Time-of-check Time-of-use (TOCTOU) Race Condition

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF NetNamedPipe transport accepts attachment to a pre-existing named pipe instance, allowing local interception of NetNamedPipe traffic when an attacker races NamedPipeListen...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: Fix double-free in teqlmasterxmit CVE-2026-23449 In the Linux kernel, the following vulnerability has been resolved: ext4: validate pidx bounds in ext4extcorrectindexes CVE-2026-31449 In the Linux...

virtualenv Has TOCTOU Vulnerabilities in Directory Creation

ImpactTOCTOU Time-of-Check-Time-of-Use vulnerabilities in virtualenv allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's appdata...

MiracleLinux 9 : libcap-2.48-10.el9_8.1 (AXSA:2026-1202:04)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1202:04 advisory. libcap: libcap: Privilege escalation via TOCTOU race condition in capsetfile CVE-2026-4878 Tenable has extracted the preceding description block directly fro...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: bonding: fix use-after-free due to enslave fail after slave array update CVE-2026-23171 In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it ...

CVE-2026-25271: Time-of-check Time-of-use (TOCTOU) Race Condition

Memory Corruption when processing asynchronous input parameters due to improper handling of modified values between check and use...

CVE-2026-43927: Time-of-check Time-of-use (TOCTOU) Race Condition

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, a race condition in the cart checkout flow allows an authenticated client to apply a promo code beyond its configured maximum uses. By sending concurrent checkout requests before any single request...