A working exploit written in Python (later released in other programming languages as well) consists of about ten lines of code and uses standard system calls that are indistinguishable from normal system activity.
Kaspersky explain what the CVE-2026-31431 vulnerability, unofficially named as Copy Fail and published on April 29, is. Kaspersky also have some advice on its mitigation and detection. Presumably, the root of the problem is commit 72548b093ee3, added to the Linux kernel in 2017. It introduced support for in-place operations for AEAD encryption in the algif_aead module, which led to a buffer handling error. Thus, the vulnerability affects kernels released between 2017 and 2026.
Read more…
Source: Kaspersky
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- CISA gives US federal agencies three days to fix a VPN bug under attack by a ransomware gang
June 9, 2026
A ransomware group is actively exploiting an unpatched flaw in security tools used across the U.S. federal government, prompting the U.S. cybersecurity agency CISA to order all civilian agencies to remediate the vulnerability by end of day Wednesday. Cybersecurity firm Check Point Software said the bug affects several of its remote access tools, firewalls, and VPNs, which act as ...
- Chrome’s zero-day Whac-A-Mole continues with fifth exploited bug of the year
June 9, 2026
Google has fixed its fifth actively exploited Chrome zero-day of 2026, and this one earned its finder a $55,000 bounty. The flaw, tracked as CVE-2026-11645, is an out-of-bounds memory access bug in Chrome’s V8 JavaScript engine. Google confirmed that the vulnerability is being exploited in the wild, but has disclosed little beyond the bare technical details. Read ...
- WhatsApp says it caught new spyware attacks linked to NSO Group in violation of court order
June 8, 2026
WhatsApp said that it disrupted a new hacking campaign linked to NSO Group, a spyware maker that has been ensnared in countless cases of abuse all over the world. The messaging app maker accused NSO of violating an earlier court order that bars the company from targeting WhatsApp and its users with its spyware, and is seeking to ...
- Microsoft’s open source tools were hacked to steal passwords of AI developers
June 8, 2026
Microsoft has cut off access to dozens of its open source projects hosted on GitHub as it investigates how hackers apparently breached the projects and injected password-stealing malware into the code. Many of the affected projects relate to Microsoft’s cloud service Azure and other tools used by developers to code with AI development apps, such as ...
- From cause to cash: a cross-border look at hacktivist activity
June 8, 2026
While tracking the activities of 4BID Kaspersky researchers uncovered a new string of campaigns that appear to be the work of several interconnected actors. While politically motivated groups generally limit their scope to specific nations – for 4BID and its peers, primarily Russian and occasionally Belarusian organizations – the latest findings reveal a shift. The actual ...
- Seeking Counsel: Ongoing Targeted Campaign Against US Law Firms
June 5, 2026
From January through May 2026, Mandiant identified a financially motivated data theft extortion campaign executed by the threat cluster UNC3753 (also tracked as “Luna Moth,” “Chatty Spider,” and “Silent Ransom Group”) targeting dozens of organizations across professional, legal, and financial services in the United States. UNC3753 leverages voice phishing (vishing) and social engineering deception techniques to ...