Dark Web Roast December 2025 Edition

Dark Web Roast - December 2025 Edition By Trellix Advanced Research Center · January 15, 2026 Executive summary December 2025 delivered a spectacular finale to the year's cybercriminal comedy show, featuring Global Ransomware-as-a-Service RaaS operator liquidating their empire for pocket change,...

CVE-2025-68797

In the Linux kernel, the following vulnerability has been resolved: char: applicom: fix NULL pointer dereference in acioctl Discovered by Atuin - Automated Vulnerability Discovery Engine. In acioctl, the validation of IndexCard and the check for a valid RamIO pointer are skipped when cmd is 6...

EUVD-2026-2669

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = ...

CVE-2026-22858 FreeRDP has a global-buffer-overflow in crypto_base64_decode

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = ...

CVE-2026-22858

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = ...

CVE-2026-22858

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = ...

CVE-2026-22858

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = ...

CVE-2026-22858

CVE-2026-22858 affects FreeRDP prior to 3.20.1, where a global-buffer-overflow can occur in the Base64 decoding path due to implementation‑defined char signedness causing out‑of‑bounds access. The vulnerability is fixed in 3.20.1; multiple advisories (SUSE/SLES/OpenSUSE/Fedora) reference updating...

CVE-2026-22211 TinyOS <= 2.1.2 Global Buffer Overflow in printfUART

TinyOS versions up to and including 2.1.2 contain a global buffer overflow vulnerability in the printfUART formatted output implementation used within the ZigBee / IEEE 802.15.4 networking stack. The implementation formats output into a fixed-size global buffer and concatenates strings for %s...

CVE-2026-22211 TinyOS <= 2.1.2 Global Buffer Overflow in printfUART

TinyOS versions up to and including 2.1.2 contain a global buffer overflow vulnerability in the printfUART formatted output implementation used within the ZigBee / IEEE 802.15.4 networking stack. The implementation formats output into a fixed-size global buffer and concatenates strings for %s...

CVE-2026-22211

CVE-2026-22211 (TinyOS

CVE-2025-71105

In the Linux kernel, the following vulnerability has been resolved: f2fs: use global inlinexattrslab instead of per-sb slab cache As Hong Yun reported in mailing list: loop7: detected capacity change from 0 to 131072 ------------ cut here ------------ kmemcache of name 'f2fsxattrentry-7:7' alread...

UBUNTU-CVE-2025-71105

In the Linux kernel, the following vulnerability has been resolved: f2fs: use global inlinexattrslab instead of per-sb slab cache As Hong Yun reported in mailing list: loop7: detected capacity change from 0 to 131072 ------------ cut here ------------ kmemcache of name 'f2fsxattrentry-7:7' alread...

CVE-2025-71105

CVE-2025-71105 documents a Linux kernel issue in f2fs where two slab caches (f2fs_xattr_entry-7:3 and f2fs_xattr_entry-7:7) with identical slab sizes cause kmem_cache_sanity_check warnings during mount operations. The root cause is using per-sb slab caches instead of a single global slab, leading...

CVE-2025-71105 f2fs: use global inline_xattr_slab instead of per-sb slab cache

In the Linux kernel, the following vulnerability has been resolved: f2fs: use global inlinexattrslab instead of per-sb slab cache As Hong Yun reported in mailing list: loop7: detected capacity change from 0 to 131072 ------------ cut here ------------ kmemcache of name 'f2fsxattrentry-7:7' alread...

CVE-2025-71105 f2fs: use global inline_xattr_slab instead of per-sb slab cache

In the Linux kernel, the following vulnerability has been resolved: f2fs: use global inlinexattrslab instead of per-sb slab cache As Hong Yun reported in mailing list: loop7: detected capacity change from 0 to 131072 ------------ cut here ------------ kmemcache of name 'f2fsxattrentry-7:7' alread...

Inside RedVDS: How a single virtual desktop provider fueled worldwide cybercriminal operations

Over the past year, Microsoft Threat Intelligence observed the proliferation of RedVDS, a virtual dedicated server VDS provider used by multiple financially motivated threat actors to commit business email compromise BEC, mass phishing, account takeover, and financial fraud. Microsoft’s...

Inside RedVDS: How a single virtual desktop provider fueled worldwide cybercriminal operations

Over the past year, Microsoft Threat Intelligence observed the proliferation of RedVDS, a virtual dedicated server VDS provider used by multiple financially motivated threat actors to commit business email compromise BEC, mass phishing, account takeover, and financial fraud. Microsoft’s...

Linux Distros Unpatched Vulnerability : CVE-2026-22858

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The roo...

Hiding in Plain Sight: Multi-Actor ahost.exe Attacks

Hiding in Plain Sight: Deconstructing the Multi-Actor DLL Sideloading Campaign abusing ahost.exe By Mallikarjun Wali and Mohideen Abdul Khader · January 14, 2026 Executive summary The Trellix Advanced Research Center has uncovered an active malware campaign that exploits a DLL sideloading...