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-2025-39792

Technical details for CVE-2025-39792 are not provided in the connected documents. Open updates may appear; monitor SUSE/openSUSE advisories and vendor bulletins for affected products, impact, and fixes.

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a restriction on writing BIOs to partitioned devices that is not handled correctly, which could result in a...

Watch Out for Salty2FA: New Phishing Kit Targeting US and EU Enterprises

Phishing-as-a-Service PhaaS platforms keep evolving, giving attackers faster and cheaper ways to break into corporate accounts. Now, researchers at ANY.RUN has uncovered a new entrant: Salty2FA , a phishing kit designed to bypass multiple two-factor authentication methods and slip past traditiona...

Watch Out for Salty2FA: New Phishing Kit Targeting US and EU Enterprises

Phishing-as-a-Service PhaaS platforms keep evolving, giving attackers faster and cheaper ways to break into corporate accounts. Now, researchers at ANY.RUN has uncovered a new entrant: Salty2FA , a phishing kit designed to bypass multiple two-factor authentication methods and slip past traditiona...

AI in Government

Just a few months after Elon Musk's retreat from his unofficial role leading the Department of Government Efficiency DOGE, we have a clearer picture of his vision of government powered by artificial intelligence, and it has a lot more to do with consolidating power than benefitting the public. Ev...

Noisy Bear Campaign Targeting Kazakhstan Energy Sector Outed as a Planned Phishing Test

A threat actor possibly of Russian origin has been attributed to a new set of attacks targeting the energy sector in Kazakhstan. The activity, codenamed Operation BarrelFire, is tied to a new threat group tracked by Seqrite Labs as Noisy Bear. The threat actor has been active since at least April...

btrfs: adjust subpage bit start based on sectorsize

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Storm-0501’s evolving techniques lead to cloud-based ransomware

Microsoft Threat Intelligence has observed financially motivated threat actor Storm-0501 continuously evolving their campaigns to achieve sharpened focus on cloud-based tactics, techniques, and procedures TTPs. While the threat actor has been known for targeting hybrid cloud environments, their...

Storm-0501’s evolving techniques lead to cloud-based ransomware

Microsoft Threat Intelligence has observed financially motivated threat actor Storm-0501 continuously evolving their campaigns to achieve sharpened focus on cloud-based tactics, techniques, and procedures TTPs. While the threat actor has been known for targeting hybrid cloud environments, their...

Anthropic Disrupts AI-Powered Cyberattacks Automating Theft and Extortion Across Critical Sectors

Anthropic on Wednesday revealed that it disrupted a sophisticated operation that weaponized its artificial intelligence AI-powered chatbot Claude to conduct large-scale theft and extortion of personal data in July 2025. "The actor targeted at least 17 distinct organizations, including in...

Anthropic Disrupts AI-Powered Cyberattacks Automating Theft and Extortion Across Critical Sectors

Anthropic on Wednesday revealed that it disrupted a sophisticated operation that weaponized its artificial intelligence AI-powered chatbot Claude to conduct large-scale theft and extortion of personal data in July 2025. "The actor targeted at least 17 distinct organizations, including in...

MixShell Malware Delivered via Contact Forms Targets U.S. Supply Chain Manufacturers

Cybersecurity researchers are calling attention to a sophisticated social engineering campaign that's targeting supply chain-critical manufacturing companies with an in-memory malware dubbed MixShell. The activity has been codenamed ZipLine by Check Point Research. "Instead of sending unsolicited...

The vulnerability of the btrfs_repair_one_sector() function in the fs/btrfs/extent_io.c module of the Btrfs file system support module in Linux allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the btrfsrepaironesector function in the fs/btrfs/extentio.c module of the Btrfs file system support in Linux kernel relates to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, an...

Phishing Campaign Uses UpCrypter in Fake Voicemail Emails to Deliver RAT Payloads

Cybersecurity researchers have flagged a new phishing campaign that's using fake voicemails and purchase orders to deliver a malware loader called UpCrypter. The campaign leverages "carefully crafted emails to deliver malicious URLs linked to convincing phishing pages," Fortinet FortiGuard Labs...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

Russian state-sponsored espionage group Static Tundra compromises unpatched end-of-life network devices

Static Tundra is a Russian state-sponsored cyber espionage group linked to the FSB's Center 16 unit that has been operating for over a decade, specializing in compromising network devices for long-term intelligence gathering operations. The group actively exploits a seven-year-old vulnerability...

Ransomware incidents in Japan during the first half of 2025

In the first half of 2025, the number of ransomware attacks in Japan increased by approximately 1.4 times compared to the previous year. Ransomware attackers continue to primarily target small and medium-sized enterprises in Japan. The most affected industry remains manufacturing, unchanged from...