We often see vulnerabilities in Windows 10 or macOS that have been around for a couple of years, but it's rare to see a security flaw that has been kicking around unnoticed for more than a decade. Unfortunately, that's the case with a new flaw found in a Dell BIOS driver.
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The security flaw is a collection of five vulnerabilities discovered by SentinelLabs in the dbultil_2_3.sys driver. Two were memory corruption issues, two were security failures from lack of input validation and finally, a logic issue that could be leveraged for a denial-of-service. The good news is that according to Dell there has been no evidence to date that the flaw was exploited in the wild despite its longevity.
However, now that it has been identified it is advisable to patch the problem as soon as possible. As you can imagine the number of laptops and desktops impacted over the course of twelve years is significant, likely in the hundreds of millions.
You can find the full list of systems that are affected on Dell's advisory page for the vulnerability. That is also where you will find the full instructions on how to both remove the dbutil_2_3.sys driver and obtain the new driver. Dell also has a helpful FAQ page for the vulnerability that should clear up any additional questions.
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Sean Riley has been covering tech professionally for over a decade now. Most of that time was as a freelancer covering varied topics including phones, wearables, tablets, smart home devices, laptops, AR, VR, mobile payments, fintech, and more. Sean is the resident mobile expert at Laptop Mag, specializing in phones and wearables, you'll find plenty of news, reviews, how-to, and opinion pieces on these subjects from him here. But Laptop Mag has also proven a perfect fit for that broad range of interests with reviews and news on the latest laptops, VR games, and computer accessories along with coverage on everything from NFTs to cybersecurity and more.