USN-8059-4: Linux kernel (Real-time) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - SMB network file system; CVE-2025-22037, CVE-2025-37899...

CVE-2024-1524

When the "Silent Just-In-Time Provisioning" feature is enabled for a federated identity provider IDP there is a risk that a local user store user's information may be replaced during the account provisioning process in cases where federated users share the same username as local users. There will...

Time-of-Check-Time-of-Use (TOCTOU) Race Condition

filelock is vulnerable to a Time-of-Check-Time-of-Use TOCTOU race condition. The vulnerability is due to improper file existence checking before opening lock files with truncation, which allows an attacker to exploit a symlink race and corrupt or truncate arbitrary files...

kernel: ext4: fix use-after-free in ext4_orphan_cleanup

A use-after-free vulnerability was found in the ext4 filesystem's orphan inode cleanup routine in the Linux kernel. When ext4inodeattachjinode fails with -ENOMEM during orphan cleanup at mount time, the error is not properly propagated. The inode is freed via iput, but the orphan list still...

CVE-2026-27128

Craft is a content management system CMS. In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a Time-of-Check-Time-of-Use TOCTOU race condition exists in Craft CMS’s token validation service for tokens that explicitly set a limited usage. The getTokenRoute method reads a token’s...

CVE-2026-27127

Craft is a content management system CMS. In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutation performs DNS resolution separately from the HTTP request. This Time-of-Check-Time-of-Use TOCTOU vulnerability enables DNS rebindi...

AI Is Not Your Security Stack

There's a debate I keep hearing in security circles: now that large language models like Claude are so capable, do we still need dedicated cybersecurity tools? I understand the appeal of the question. AI can summarize threat reports, help write detection logic, interpret vulnerability advisories,...

CVE-2026-27637 FreeScout's Predictable Authentication Token Enables Account Takeover

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.206, FreeScout's TokenAuth middleware uses a predictable authentication token computed as MD5userid + createdat + APPKEY. This token is static never expires/rotates, and if an attacker obtains...

CVE-2026-3135

creationtimestamp| type| source ---|---|--- 2026-02-25 01:41:57+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3mfnkhzakpl2o 2026-02-26 01:00:15+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mfpymfcvlx22...

CVE-2026-3134

creationtimestamp| type| source ---|---|--- 2026-02-25 01:21:55+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3mfnje7icfp2u 2026-02-26 01:20:09+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mfpzpxm5q22m...

kernel: ext4: fix use-after-free in ext4_orphan_cleanup

A use-after-free vulnerability was found in the ext4 filesystem's orphan inode cleanup routine in the Linux kernel. When ext4inodeattachjinode fails with -ENOMEM during orphan cleanup at mount time, the error is not properly propagated. The inode is freed via iput, but the orphan list still...

SUSE CVE-2026-2757

Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Grafana 安全漏洞

Grafana is a set of open-source monitoring tools developed by Grafana Open Source, which provide a visual monitoring interface. This tool is primarily used for monitoring and analyzing Graphite, InfluxDB, and Prometheus. Grafana has a security vulnerability that stems from a time difference betwe...

Wireshark 代码问题漏洞

Wireshark is a set of network packet analysis tools developed by the Wireshark team. The software’s function is to capture network packets and display detailed data for analysis. Versions 4.6.0 to 4.6.3 of Wireshark had code vulnerabilities; these vulnerabilities stemmed from the NTS-KE protocol...

PT-2026-21919

In Progress® Telerik® UI for AJAX, versions prior to 2026.1.225, an insufficient entropy vulnerability exists in RadAsyncUpload, where a predictable temporary identifier, based on timestamp and filename, can enable collisions and file content tampering...

PT-2026-21901

Name of the Vulnerable Software and Affected Versions Grafana affected versions not specified Description A time-of-create-to-time-of-use TOCTOU issue allows re-deletion of recently deleted and recreated data sources without authorization. The attack requires specific conditions: admin access to...

📄 MS‑EVEN TOCTOU ElfrBackupELFW Arbitrary File Write

This module exploits a Time-of-Check Time-of-Use TOCTOU vulnerability in the MS-EVEN protocol Windows Event Log service. A low-privileged authenticated user can write arbitrary files to a remote Windows machine by abusing the ElfrBackupELFW RPC function. This module strictly follows the MS-EVEN...

CVE-2026-26717

An issue in OpenFUN Richie LMS in src/richie/apps/courses/api.py. The application used the non-constant time == operator for HMAC signature verification in the synccourserunfromrequest function. This allows remote attackers to forge valid signatures and bypass authentication by measuring response...

Authorization bypass in Grafana datasource deletion

A time-of-create-to-time-of-use TOCTOU vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so. This requires several very stringent conditions to be met: The attacker must have admin access to the specific datasource prior to its first deletion...

📄 Cosign 3.0.4 Certificate Chain Validation Bypass

A logic flaw in the certificate verification process of Cosign versions 3.0.4 and below allows signatures to be accepted even when the issuing Intermediate Certificate Authority CA has already expired. This proof of concept generates a chain that can be tested with this software in order to prove...