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CVE-2026-99286

xen-netback: Fix XenBus connection failure cleanup

In the Linux kernel, the following vulnerability has been resolved: xen-netback: Fix XenBus connection failure cleanup xenvif_get_stats and xenvif_get_ethtool_stats capture vif->num_queues under rcu_read_lock. We need to unpublish vif->num_queues before synchronize_net to ensure that readers that come afterwards will not read a non-zero vif->num_queues and attempt to access invalid queues. This is the same cleanup algorithm as used in backend_disconnect and added in commit b17075d5c198 ("xen-netback: fix race condition on XenBus disconnect"). This is XSA-531

CVSS 3.1 · 5.6 Medium EPSS < 1% KEV · Not listed
Vendors
Linux
Products
Linux Linux Kernel
CVE-2026-99287

xen-netback: Zero out sring pointers on unmap

In the Linux kernel, the following vulnerability has been resolved: xen-netback: Zero out sring pointers on unmap If xenvif_map_frontend_data_rings() fails when a ring is already mapped, it unmaps them via xenvif_unmap_frontend_data_rings() which keeps the ring pointers unchanged. xenvif_connect_data()'s cleanup path calls xenvif_disconnect_queue() which in turn calls xenvif_unmap_frontend_data_rings() again, which will attempt to unmap the pointers a second time. Zero out the ring pointers after they are unmapped to avoid this issue. This is XSA-532

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Linux
Products
Linux Linux Kernel
CVE-2026-88224

Windows AppX Deployment Service Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows Server 2016 and 3 more
CVE-2026-94525

Windows Error Reporting Elevation of Privilege Vulnerability

An elevation of privilege vulnerability exists in Windows Error Reporting (WER) when WER handles and executes files. The vulnerability could allow elevation of privilege if an attacker can successfully exploit it. An attacker who successfully exploited the vulnerability could gain greater access to sensitive information and system functionality. To exploit the vulnerability, an attacker could run a specially crafted application. The security update addresses the vulnerability by correcting the way that WER handles and executes files.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1809 Windows 10 21h2 Windows 10 21h2 and 17 more
CVE-2026-129259

Mereithhh VanBlog Image Upload Endpoint access.ts cross site scripting

A weakness has been identified in Mereithhh VanBlog up to 0.54.0. This affects an unknown part of the file packages/server/src/types/access/access.ts of the component Image Upload Endpoint. Executing a manipulation can lead to cross site scripting. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 5.1 Medium EPSS n/a KEV · Not listed
Vendors
Mereithhh
Products
Vanblog