UBUNTU-CVE-2025-39795

In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunksectors check in blkstacklimits In blkstacklimits, we check that the t-chunksectors value is a multiple of the t-physicalblocksize value. However, by finding the chunksectors value in bytes...

CVE-2025-39795 block: avoid possible overflow for chunk_sectors check in blk_stack_limits()

In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunksectors check in blkstacklimits In blkstacklimits, we check that the t-chunksectors value is a multiple of the t-physicalblocksize value. However, by finding the chunksectors value in bytes...

CVE-2025-39795

CVE-2025-39795 involves a kernel block layer (blk_stack_limits) overflow where chunk_sectors could exceed an unsigned int when interpreted in bytes. The concrete fix, documented in multiple advisories (e.g., Ubuntu USN entries and Oracle/Linux ELSA/DLA), changes the validation to operate on secto...

CVE-2025-39795 block: avoid possible overflow for chunk_sectors check in blk_stack_limits()

In the Linux kernel, the following vulnerability has been resolved: block: avoid possible overflow for chunksectors check in blkstacklimits In blkstacklimits, we check that the t-chunksectors value is a multiple of the t-physicalblocksize value. However, by finding the chunksectors value in bytes...

CVE-2025-39792 dm: Always split write BIOs to zoned device limits

In the Linux kernel, the following vulnerability has been resolved: dm: Always split write BIOs to zoned device limits Any zoned DM target that requires zone append emulation will use the block layer zone write plugging. In such case, DM target drivers must not split BIOs using dmacceptpartialbio...

GhostRedirector Hacks 65 Windows Servers Using Rungan Backdoor and Gamshen IIS Module

Cybersecurity researchers have lifted the lid on a previously undocumented threat cluster dubbed GhostRedirector that has managed to compromise at least 65 Windows servers primarily located in Brazil, Thailand, and Vietnam. The attacks, per Slovak cybersecurity company ESET, led to the deployment...

Dissecting PipeMagic: Inside the architecture of a modular backdoor framework

Among the plethora of advanced attacker tools that exemplify how threat actors continuously evolve their tactics, techniques, and procedures TTPs to evade detection and maximize impact, PipeMagic, a highly modular backdoor used by Storm-2460 masquerading as a legitimate open-source ChatGPT Deskto...

Exploit for Path Traversal in Rarlab Winrar

CVE-2025-8088 WinRAR Proof of Concept PoC-Exploit !PoCht...

Dutch NCSC Confirms Active Exploitation of Citrix NetScaler CVE-2025-6543 in Critical Sectors

The Dutch National Cyber Security Centre NCSC-NL has warned of cyber attacks exploiting a recently disclosed critical security flaw impacting Citrix NetScaler ADC products to breach organizations in the country. The NCSC-NL said it discovered the exploitation of CVE-2025-6543 targeting several...

Researchers Spot Surge in Erlang/OTP SSH RCE Exploits, 70% Target OT Firewalls

Malicious actors have been observed exploiting a now-patched critical security flaw impacting Erlang/Open Telecom Platform OTP SSH as early as beginning of May 2025, with about 70% of detections originating from firewalls protecting operational technology OT networks. The vulnerability in questio...

Linux Distros Unpatched Vulnerability : CVE-2024-27059

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - USB: usb-storage: Prevent divide-by-0 error in isd200atacommand The isd200 sub-driver in usb-storage uses the HEADS and SECTORS values in the ATA ID information...

ToolShell: a story of five vulnerabilities in Microsoft SharePoint

On July 19–20, 2025, various security companies and national CERTs published alerts about active exploitation of on-premise SharePoint servers. According to the reports, observed attacks did not require authentication, allowed attackers to gain full control over the infected servers, and were...

UNG0002 Group Hits China, Hong Kong, Pakistan Using LNK Files and RATs in Twin Campaigns

Multiple sectors in China, Hong Kong, and Pakistan have become the target of a threat activity cluster tracked as UNG0002 aka Unknown Group 0002 as part of a broader cyber espionage campaign. "This threat entity demonstrates a strong preference for using shortcut files LNK, VBScript, and...

Lessons for Cybersecurity from the American Public Health System

The United States needs national institutions and frameworks to systematically collect cybersecurity data, measure outcomes, and coordinate responses across government and private sectors, similar to how public health systems track and address disease outbreaks...

Over 70 Organizations Across Multiple Sectors Targeted by China-Linked Cyber Espionage Group

The reconnaissance activity targeting American cybersecurity company SentinelOne was part of a broader set of partially-related intrusions into several targets between July 2024 and March 2025. "The victimology includes a South Asian government entity, a European media organization, and more than...

New Russia-affiliated actor Void Blizzard targets critical sectors for espionage

Executive summary: Void Blizzard is a new threat actor Microsoft Threat Intelligence has observed conducting espionage operations primarily targeting organizations that are important to Russian government objectives. These include organizations in government, defense, transportation, media, NGOs,...

CVE-2021-26951

An issue was discovered in the calamine crate before 0.17.0 for Rust. It allows attackers to overwrite heap-memory locations because Vec::setlen is used without proper memory claiming, and this uninitialized memory is used for a user-provided Read operation, as demonstrated by Sectors::get...

CVE-2021-1983

Possible buffer overflow due to improper handling of negative data length while processing write request in VR service in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables...

DarkWatchman, Sheriff Malware Hit Russia and Ukraine with Stealth and Nation-Grade Tactics

Russian companies have been targeted as part of a large-scale phishing campaign that's designed to deliver a known malware called DarkWatchman. Targets of the attacks include entities in the media, tourism, finance and insurance, manufacturing, retail, energy, telecom, transport, and biotechnolog...

BPFDoor’s Hidden Controller Used Against Asia, Middle East Targets

A controller linked to BPF backdoor can open a reverse shell, enabling deeper infiltration into compromised networks. Recent attacks have been observed targeting the telecommunications, finance, and retail sectors across South Korea, Hong Kong, Myanmar, Malaysia, and Egypt...