The Product Security Blog has moved!

Red Hat Product Security has joined forces with other security teams inside Red Hat to publish our content in a common venue using the Security channel of the Red Hat Blog.This move provides a wider variety of important Security topics,[…]

SPECTRE Variant 1 scanning tool

As part of Red Hat's commitment to product security we have developed a tool internally that can be used to scan for variant 1 SPECTRE vulnerabilities. As part of our commitment to the wider user community, we are introducing this[…]

Join us in San Francisco at the 2018 Red Hat Summit

This year’s Red Hat Summit will be held on May 8-10 in beautiful San Francisco, USA.Product Security will be joining many Red Hat security experts in presenting and assisting subscribers and partners at the show.Here is a sneak peek at[…]

Let's talk about PCI-DSS

For those who aren’t familiar with Payment Card Industry Data Security Standard (PCI-DSS), it is the standard that is intended to protect our credit card data as it flows between systems and is stored in company databases.PCI-DSS requires that all[…]

Abuse of RESTEasy Default Providers in JBoss EAP

Red Hat JBoss Enterprise Application Platform (EAP) is a commonly used host for Restful webservices. A powerful but potentially dangerous feature of Restful webservices on JBoss EAP is the ability to accept any media type. If not configured to accept[…]

The RHSA notifications you want, right in your Inbox

Red Hat Product Security takes pride in the quality and timeliness of its Security Advisories and all the accompanying information we publish for every erratum and vulnerability that we track and fix in our products.There are many ways in which[…]

Join us at Red Hat Summit 2017

As you’ve probably heard, this year’s Red Hat Summit is in Boston May 2-4. Product Security is looking forward to taking over multiple sessions and activities over the course of those 3 days, and we wanted to give you a[…]

Red Hat Product Security Risk Report 2016

At Red Hat, our dedicated Product Security team analyzes threats and vulnerabilities against all our products and provides relevant advice and updates through the Red Hat Customer Portal. Customers can rely on this expertise to help them quickly address the[…]

Deprecation of Insecure Algorithms and Protocols in RHEL 6.9

Cryptographic protocols and algorithms have a limited lifetime—much like everything else in technology. Algorithms that provide cryptographic hashes and encryption as well as cryptographic protocols have a lifetime after which they are considered either too risky to use or plain[…]

From There to Here (But Not Back Again)

Red Hat Product Security recently celebrated our 15th anniversary this summer and while I cannot claim to have been with Red Hat for that long (although I’m coming up on 8 years myself), I’ve watched the changes from the “0day”[…]

Redefining how we share our security data.

Red Hat Product Security has long provided various bits of machine-consumable information to customers and users via our Security Data page.Today we are pleased to announce that we have made it even easier to access and parse this data through[…]

CVE-2016-3710: QEMU: out-of-bounds memory access issue

Quick Emulator (aka QEMU) is an open source systems emulator. It emulates various processors and their accompanying hardware peripherals like disc, serial ports, NIC et al. A serious vulnerability of out-of-bounds r/w access through the Video Graphics Array (VGA) emulator[…]

Go home SSLv2, you’re DROWNing

The SSLv2 protocol had its 21st birthday last month, but it’s no cause to celebrate with an alcohol beverage, since the protocol was already deprecated when it turned 18.Announced today is an attack called DROWN that takes advantage of systems[…]

Debian Security Advisory: GIMP Denial of Service Vulnerabilities DSA-6014-1

Several vulnerabilities were discovered in GIMP, the GNU Image Manipulation Program, which could result in denial of service or potentially the execution of arbitrary code if malformed Farbfeld, Wireless Bitmap, DICOM or Apple Icon images are opened.

Debian: firefox-esr Important Connection Errors Fix DSA-6003-2

Firefox 140.3.1 has been released, which fixes connection errors with some sites; if HTTP/3 connections failed, the fallback is now handled more gracefully.

Debian: DSA-6011-1 ThunderBird Critical Exec Code Threats CVE-2025-10527

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code. Debian follows the Thunderbird upstream releases. Support for the

Debian: libxslt Critical Regression Disordered IDs DSA-5979-2

The update for libxslt announced in DSA 5979-1 introduced a regression while back porting the upstream deterministic generate-id implementation, which makes the generated IDs may remain in a non-deterministic order.

Debian: FFmpeg Critical Denial of Service & Code Exec DSA-6007-1

Several vulnerabilities have been discovered in the FFmpeg multimedia framework, which could result in denial of service or potentially the execution of arbitrary code if malformed files/streams are processed.

Ubuntu: nginx Vulnerability in HTTP/3 Handling DSA-6006-1

This update for Jetty, a Java servlet engine and web server, addresses a protocol-level vulnerability in HTTP/2 support also referred to as "MadeYouReset".

Debian: Firefox ESR Critical Code Execution Risks DSA-6003-1

Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, sandbox escape, information disclosure or bypass of the same-origin policy.

Debian: cJSON Important Input Sanitization Issue DSA-6001-1 CVE-2025-57052

It was discovered that cJSON, an ultralightweight JSON parser, performed insufficient input sanitising, which could result in out-of-bounds memory access.

Debian: cups Critical Auth Bypass DoS Vulnerability DSA-5998-1

Two vulnerabilities were discovered in cups, the Common UNIX Printing System, which may result in authentication bypass with AuthType Negotiate or in denial of service (daemon crash).

Mozilla -- spoofing