Feeds

Linux kernel DoS risk under the spotlight

Don't be too alarmed

  • alert
  • submit to reddit

Internet Security Threat Report 2014

There is a potentially troublesome denial of service risk linked to a vuln in the Linux 2.4 kernel, concerning the cacheing of routing information.

A Red Hat advisory on the problem explains: "A remote attacker could send packets with carefully chosen, forged source addresses in such a way as to make every routing cache entry get hashed into the same hash chain. The result would be that the kernel would use a disproportionate amount of processor time to deal with new packets, resulting in a remote denial of service attack."

Red Hat has issued updated kernel packages.

An advisory by security outfit Secunia provides a list of other affected Linux distributions (too numerous to list here). An official patch or update for the Linux Kernel is yet to be made available, according to Secunia.

However workarounds are available and there's little evidence that the vulnerability has been maliciously exploited, at least for now. ®

Internet Security Threat Report 2014

More from The Register

next story
George Clooney, WikiLeaks' lawyer wife hand out burner phones to wedding guests
Day 4: 'News'-papers STILL rammed with Clooney nuptials
Shellshock: 'Larger scale attack' on its way, warn securo-bods
Not just web servers under threat - though TENS of THOUSANDS have been hit
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
PEAK IPV4? Global IPv6 traffic is growing, DDoS dying, says Akamai
First time the cache network has seen drop in use of 32-bit-wide IP addresses
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Researchers tell black hats: 'YOU'RE SOOO PREDICTABLE'
Want to register that domain? We're way ahead of you.
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.