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Several Linux Kernel Vulnerabilities Accidentally Posted To Public Kernel Mailing List

2 weeks 2 days ago
Trend Micro's Zero Day Initiative appears to have accidentally disclosed several unpatched Linux kernel vulnerabilities on the public LKML instead of the private security list, including two CVSS 9.0 flaws that could enable remote code execution through SMB Direct and KSMBD. "This seemingly was a mistake with Linux's second-in-command Greg Kroah-Hartman responding to each report asking about their submission to the public mailing list," adds Phoronix. The newly-disclosed vulnerabilities include: ZDI-CAN-33549 as a CVSS 9.0 scored vulnerability for SMB Direct remote code execution vulnerability due to integer underflow. For this one there is a patch in a Git branch of code intended for Linux v7.5 but now presumably will be expedited for getting to mainline. ZDI-CAN-33774 as a KSMBD race condition that can lead to remote code execution. Another CVSS 9.0 rated vulnerability. ZDI-CAN-33367 is a vulneravbility for skbuff skb_zerocopy in the network code that can lead to local privilege escalation. For this one Linux kernel developers received a security report from another source last week over the same issue and a patch is expected to be posted soon. ZDI-CAN-34068 as a VMWGFX VMware graphics driver bug with an out-of-bounds write leading to local privilege escalation. ZDI-CAN-34076 an uninitialized resource in the NVMET code leading to information disclosure. ZDI-CAN-32005 was also posted to the mailing list a day prior for a search-domain TCP query stack buffer overflow leading to local privilege escalation.

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Tails 7.15.1 Blocks Compromised HTTPS Certificates in Urgent Privacy Security Fix

2 weeks 2 days ago
by George Whittaker

The Tails project has released Tails 7.15.1, an emergency security update addressing a compromised certificate authority that could allow attackers to impersonate legitimate HTTPS websites. Released on October 23, 2026, the update focuses on protecting users against a potentially serious man-in-the-middle attack involving certificates associated with eMudhra, an authority whose intermediate certificates were compromised.

The emergency release updates Tor Browser to version 15.0.26, addressing CVE-2026-113470, and modifies the distribution's trusted certificate authorities to block all eMudhra certificates. These changes are particularly important for Tails because the operating system routes internet traffic through the Tor network, where malicious exit nodes or other network intermediaries could potentially exploit compromised certificates to impersonate secure websites.

Unlike a conventional maintenance update, Tails 7.15.1 does not introduce major desktop features, new applications, or significant interface changes. Its purpose is to close a security gap that could undermine the authenticity of HTTPS connections. The developers recommend upgrading promptly, especially for users who rely on Tails for sensitive communications, anonymous research, journalism, or other privacy-critical activities.

Why Tails 7.15.1 Was Released as an Emergency Update

Tails, short for The Amnesic Incognito Live System, is a Debian-based Linux distribution designed to help users preserve their privacy and reduce traces of their computing activity. It typically runs from a USB stick and routes internet connections through Tor, making it useful for people who need stronger privacy protections than those provided by a conventional desktop operating system.

The distribution also emphasizes minimizing persistent data. By default, Tails operates as a live environment and does not retain ordinary session activity after shutdown. Users who need to preserve selected files and settings can configure encrypted Persistent Storage on their USB device, allowing them to maintain important information across sessions without changing the operating system's general amnesic behavior.

Because Tails is built around privacy and secure communication, problems involving HTTPS certificate validation deserve particular attention. Tor helps obscure the relationship between a user's network location and the websites they visit, but it does not automatically guarantee that every website encountered through an exit node is authentic. HTTPS provides an additional layer of protection by authenticating websites and encrypting communications between the browser and the destination server.

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George Whittaker