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Three privilege escalation vulnerabilities that have managed to avoid detection since 2006 have been discovered in the Linux kernel. All three have been patched - update now!

Cybersecurity company GRIMM found the vulnerabilities lurking in the kernel’s iSCSI (Small Computer System Interface) subsystem that can be exploited to gain root privileges on Linux machines.
 

“Unlike most things that we find gathering dust, these bugs turned out to still be good, and one turned out to be usable as a Local Privilege Escalation (LPE) in multiple Linux environments,” says GRIMM security researcher Adam Nichols who discovered the bugs.