CVE-2022-0847 aka Dirty Pipe vulnerability in Linux kernel

Last week, security researcher Max Kellermann discovered a high severity vulnerability in the Linux kernel, which was assigned the designation CVE-2022-0847. It affects the Linux kernels from 5.8 through any version before 5.16.11, 5.15.25 and 5.10.102, and can be used for local privilege escalation. The vulnerability resides in the pipe tool, which is used for unidirectional communication between processes, so the researcher called it “Dirty Pipe”. Although the flaw is fixed in the latest Linux kernel versions, and, according to our data, there is no mass exploitation of this vulnerability at the moment, a detailed description and a working POC are available online, which increases the risk of this vulnerability being exploited by attackers.

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Source: Kaspersky