Crowdstrike on Wednesday made public its discovery of yet another long-buried Linux vulnerability. "Venom," as it has been dubbed, was unearthed by the firm's senior security researcher, Jason Geffner. It is listed as vulnerability CVE-2015-3456. Venom exists in the virtual floppy drive code used by virtualization platforms based on QEMU, or quick emulator. It has been around since 2004.