The perceived security of Linux suffered a setback last week after the discovery of a serious bug in the Linux kernel which allows hackers to gain root access through a variety of programs, including Sendmail.
The bug affects versions 2.2.15 as well as some 2.4.0 versions. Users are advised to upgrade to 2.2.16. The news is all the more serious because the code that exploits the flaw has been posted on the Net, including several security sites.
A notice on the Sendmail Web site last week said: "There is a bug in the Linux kernel for versions through 2.2.15 that allows local users to get root.
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