Feeds

Linux kernel cured of remote panic-attack bug

Get your BUG_ON

The Power of One eBook: Top reasons to choose HP BladeSystem

Developers of the Linux kernel have patched a bug that allowed attackers to remotely crash a machine by sending it malicious Wi-Fi signals.

The flaw in the delBA handling of mac80211 has been fixed in version 2.6.32, the latest stable release of the Linux kernel. Various distributions of the open-source operating system have already acknowledged the issue and are expected to push out updates soon. Based on developer notes on the official Linux website, the vulnerability appears to have been introduced in February.

The flaw stemmed from faulty code that called the BUG_ON macro before various checks were performed. That raised the possibility of NULL being passed to TX/RX_STOP parameter, which in turn caused a kernel panic. The end result: an attacker within Wi-Fi range of a vulnerable machine might be able to effectively shut it down.

The bug was discovered by Johannes Berg, who found a separate flaw related to mac80211 that was fixed in the latest release. Details about both flaw are here and here. ®

Designing a Defense for Mobile Applications

More from The Register

next story
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
Four fake Google haxbots hit YOUR WEBSITE every day
Goog the perfect ruse to slip into SEO orfice
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.